KARACHI - Police and Rangers arrested dozens of suspects in their joint raids Tuesday night and Wednesday in Karachi, where life returned to a delicate normalcy in most areas following a week of violence in which more than 100 people were killed. The raids came amid mounting calls from leading business groups and politicians for the army to step in to end the spreading violence, but the relative calm on Wednesday proved that the thing most needed for peace is sincerity of purpose and courage on the part of the administration and the law enforcement agencies. We have conducted 82 different raids, big and small, all across the city since last night, and have arrested 72 people, Karachi police chief Saud Mirza said. Saud said the raids would continue and had already shown results with only one person killed on Wednesday in the least violent day for the week. Sindh Home Minister Manzoor Wasan said that 54 alleged outlaws were arrested, one killed and six injured during the surgical search operation in nine selective parts of the city since its beginning on Tuesday evening. Talking to media persons at Shaheed Benazir Bhutto Police Training Centre, Razakabad, on Wednesday, he said cases have been registered against the accused. Wasan said that 12 target killers have also been arrested from various parts of the city during the last 48 hours and they will be produced before the media soon. He said that all political parties were taken into confidence for launching the targeted operation. Police and Rangers conducted joint door to door operation in nine localities, including Orangi Town, Kati Pahari and Qasba Colony of Karachi and arrested dozens of suspects. A spokesman of the Rangers said that the paramilitary force arrested 14 suspected criminals during search operation in various parts of the city on Tuesday night. The midnight operation was conducted in Khamiso Goth, Macasa Centre, Sultan Complex, PIB Colony and Baloch Para. Police and Rangers also took action in Orangi Town, Gulistan-e-Jauhar and Pehlwan Goth and conducted snap checking of vehicles particularly in Lyari Town. During the search operation, the Rangers recovered 79 different types of weapons and thousands of rounds of ammunition, besides, seizing three unregistered cars. The pamphlet type (Parchee) material used by extortionists was also recovered, the spokesman added. Law Enforcement Agencies (LEAs) teams kept many areas of Lyari under siege for no less than four hours but could only arrest five suspects, and most of the arrests were made from Orangi Town, Kati Pahari and Qasba Colony areas. LEAs also arrested several persons during a search operation at Micasa Apartments near Hassan Square and Khamiso Goth in New Karachi. Residents of Lyari said that law enforcement agencies reached Lyari in the wee hours and some inhabitants influenced by the gangsters came on the streets and protest the arrival of the law enforcers. They said five persons namely Abbas, Irfan, Shoaib, Hussain and Abdul Kareem, who belonged to Kachi community, were injured in an armed attack in Lyari at the very time LEAs cordon off the area to start the search operation. Subsequently, the LEAs penetrated into Salar compound, Aqal Bonga, Bhim Pura, Kharader and some other areas partially dominated by Lyari gangsters. The police claimed to have detained four suspects from there. The LEAs also conducted operations in Micasa Apartment, Old Subzimandi, Five Star Market, Jumani Arcade but were unable to achieve the target. Residents of the area said that the criminals left the areas before the operation as in each apartment where LEAs reached had escape routes. On the other hand, Federal Interior Minister Rehman Malik and Sindh IGP Wajid Durrani visited Kati Pahari area. Talking to media, Malik said that Rangers and police have been given complete authority to conduct the operations. He repeated his claims of dealing with the culprits with 'iron hands and bringing them 'to light and eventually to 'justice. Latter in the day, Sindh Chief Minister Qaim Ali Shah and federal Interior Minister Rehman Malik jointly chaired a meeting at CMs House to review the security situation. They agreed on continuing the operation against criminal elements and stressed that the law enforcement agencies should further improve their performance for better results of the operations. About 900 people have been killed in violence in Karachi this year, almost a third of them in July. Army Chief General Ashfaq Pervez Kayani said Sunday that the army was ready to help stem the violence if the civilian government asked it do so. The provincial government has so far ruled out an army intervention. Karachi has a long history of violence, and ethnic, religious and sectarian disputes and political rows can often explode into battles engulfing entire neighbourhoods. Street thugs and ethnic gangs have been used by political parties as foot soldiers in a turf war in a city which contributes about two-third of Pakistans tax revenue and is home to ports, the stock exchange and central bank. The latest fighting erupted August 17 in the citys old district of Lyari, which has been a focus of battles between rival gangs for long and is a stronghold of Pakistan Peoples Party (PPP), before spreading to other parts of the city. Some officials and observers blame the PPP, the citys dominant Muttahida Qaumi Movement (MQM) and its rival ethnic-Pashtun Awami National Party (ANP) for links to criminal gangs as well as engaging in turf wars to gain political space.