KARACHI (Agencies) At least 22 people were killed and several others injured in separate rain-related incidents after monsoon-triggered downpour continued to lash various parts of Sindh including Karachi and Quetta on Tuesday. Amid heavy rains which continued playing havoc in Sindh for the third consecutive day paralysing life in Karachi, the Sindh government called on the world to speed up relief efforts after torrential rains exacerbated major floods, killing 270 people and making another 200,000 homeless in Sindh. Sindh ministers and elected representatives also made desperate appeals to the people of the country to extend relief assistance for more than five million marooned people. In Jamshoro due to so heavy rains, at least three people were killed after roof of a dilapidated mud and stone house caved in. In Tando Hyder, a child was killed while a woman was injured when a wall of a house collapsed. Two people were killed in Tando Muhammad Khan when roof of a house caved in. Lightning and wall collapse incidents in Hala area resulted in death of four people including two children. Low-lying areas in Matyari were also inundated by the heavy rain. Meteorological Department said the rain spell is likely to subside in the next 24 to 36 hours in Sindh and the system would move to Punjab and Balochistan. Meteorologist Mohammad Riaz said that the rain spell could flood streams and nullahs in eastern Balochistan. On the other hand, water-borne diseases were on the rise in the province especially in rains and flood-hit areas and three persons have been killed of epidemics so for. Hyderabad received 49 mm rain in just two hours. Many areas of the city were submerged under three to four feet water after heavy rain. Recent rains have claimed 30 lives in Sanghar while 500 were reported injured. The rains have also destroyed more than 37,000 houses in the area. Meanwhile, hundreds of rain affectees including women looted trucks carrying relief goods in Badin and Sanghar. Police resorted to baton-charge to disperse the desperate people. Faryal said Nawabshah were under several feet of water while many houses had collapsed. Sindh Information Minister Sharjeel Memon said five million people had been affected by rains and floods while 70,000 houses had been completely destroyed. He appealed to the media to highlight the sufferings of Sindh flood victims. Meanwhile, officials said devastation in parts of the countrys main breadbasket was worse than last year, when a fifth of the country was left under water by the countrys worst-ever floods that affected a total of 21 million people. The government was trying to fend off criticism of an inadequate response to the floods for a second year running, by urging the international community to step up help to already aid-dependent Pakistan. At least 270 people have died so far because of falling roofs, drowning in flooding waters and subsequent diseases among the affected families, said Sajjad Haider Shah, a disaster management official in Sindh. Government officials say at least 5.3 million people and 1.2 million homes have been affected, with 1.7 million acres of arable land inundated. But a spokesman for charity Pattan, working in the affected areas, feared that up to 10 million people could be at risk. Estimates show that 1.2 million houses are affected and people are really in a bad condition, so thats why Im saying this figure must be close to double, Sarwar Bari, Pattans national coordinator and spokesman, told AFP. The United States, whose relations with Pakistan nosedived after American troops killed Osama bin Laden near Islamabad in May, says it is sending food aid for nearly 350,000 people and medical assistance for about 500,000. Meanwhile, one kilometer stretch of National Highway has been swept away by flash floods between Oungar to Jhirk of Thatta district as a result of unprecedented heavy rainfalls in the area on Monday night. Bari Baloch from Quetta adds: Torrential rains played havoc in the provincial capital on Tuesday by killing nine people, including eight children and damaging several houses. The rain started on evening when new monsoon currents entered the province. All seasonal nullahs passing through the city overflowed and several feet of rainwater accumulated on all main roads and streets of Quetta, badly disrupting traffic. Five children of two different families were swept away in floodwater in Muslim Attihad Colony area of Satellite Town. Commissioner Quetta Naseem Lehri talking to the TheNation confirmed the incident and said three bodies were recovered while rescue teams were searching for the other two. Two children identified as Rehmatullah and Qudratullah, aged between six to eight, were swept away in Balali area, in the outskirts of Quetta when floodwater entered the streets. Similarly, a girl also drowned in rainwater in Pashootabad area. A man was killed on Bashir Ahmed Chowk of Sariab Road after receiving electric shock. Floodwaters coming from mountains surrounding the metropolis, including Koh Murdar, entered dozens of houses and makeshifts cottages in downstream areas, forcing the people to move to safer places. Dozens of mud-houses were collapsed in Pashootabad area and rainwater entered in dozens of shops in different parts of the city including Allamdar Road, Huda, Jail Road and Sariab Road. Floodwater also damaged railway track at Killi Shahnawaz area suspending rail service with rest of the country. However, Railway officials said technical staff had been sent to repair the damaged track and service would soon be restored. Worst traffic jam was witnessed on all main roads of Quetta including Jinnah Road, Double Road, Shahrah-e-Iqbal, Joint Road and Brewery Road. A large number of houses and huts were washed away in the outskirts of Quetta, including Load Karez, Ghousabad and Muslim Attihad Colony that rendered hundreds of people homeless, Naseem said adding, rescue teams had been sent to provide help to affectees and shifting people to safer places. He said two relief camps had been set up at Load Kareez and Darghsha area where more than 1,000 people were being provided tents and food. He said a survey of damages caused by rains and floods would be carried out on Wednesday. According to reports reaching here, heavy rains also hit Harnai district of Balochistan where rain and floodwaters entered in dozens of houses, causing severe damage to property. However, no loss of life was reported. Staff Reporter from Islamabad adds: President Asif Ali Zardari on Tuesday appealed to the people and all political parties to offer special prayers on Wednesday after Zohar prayers for the flood victims in Sindh and other parts of the country. In a message from London, the President also urged the people to pray for those suffering from dengue fever and other ailments. According to the Spokesperson for the President, Farhatullah Babar, the President said these were testing times that called for demonstrating unity and rising above the political considerations. While the government is doing all it can to alleviate the sufferings of the people, the need for collective prayers against natural calamities is no less important, the President added. Meanwhile, in response to the appeal to international community for assistance in dealing with the aftermath of torrential rains, the governments of the United Sates and Japan have announced emergency aid for the flood-affected people in Sindh and other parts of the country. Japan would provide emergency relief goods worth 35 million Yen (approximately 450,000 US $). The relief goods include tents, water purifiers and medicines. In response to the Government of Pakistans disaster declaration on September 9, the United States has immediately begun providing a broad range of assistance to Sindh communities affected by this years floods, including food supplies for more than 50,000 families, safe drinking water, shelter, sanitation and hygiene supplies, and basic health care for thousands more. Assistance provided by the United States will help thousands of flood-affected families attend to their immediate needs over the next few weeks, said Andrew Sisson, Director of the US Agency for International Development Mission. This support is part of the broader US governments commitment to assisting the people of Pakistan by supporting long-term development in times of immediate crisis. It will be delivered by local and international organisations specialising in relief work. Already, USAID-funded food packages have reached 23,000 families in seven districts of Sindh (Badin, Mirpurkhas, Tando Muhammad Khan, Tando Allah Yar, Tharparker, Umarkot and Hyderabad). USAID also paid for nearly 60 trucks to deliver relief to affected areas and 1,000 plastic tarpaulins for shelter, and is financing other efforts to coordinate relief activities. In the coming days, US-funded relief supplies, including shelter materials, drinking water, sanitation and hygiene provisions will be provided through the Rural Support Programme network, a Pakistani non-governmental organisation. The United States is also contributing funding for 26,000 food packages to be distributed by the World Food Programme. The US has also provided funding to the Agha Khan Universitys mobile health unit, which is providing health care to affected communities in Badin district. Additional US-sponsored medical teams will begin working in other heavily flooded areas within the next several days. These health services are crucial in preventing and treating diarrhoea, malaria, and other diseases that typically follow floods.