KABUL (AFP) - Taliban attacks rocked Afghanistan Tuesday two days before elections, with suicide blasts killing up to 15 people including UN staff and a Nato soldier and a rocket slamming into the presidential compound. The violence, striking at the heart of the capital Kabul, followed renewed Taliban threats to sabotage Thursdays (tomorrow) ballot in which 17 million Afghans are eligible to elect a president, amid heightened fears voters could stay away. A suicide car bomb ripped through a busy road targeting a Nato convoy near a US military base and a market, killing up to 10 people including a Nato soldier, and wounding another 50, officials said. Updated reports indicate that those killed were one Isaf service member, seven Afghan civilians and two Afghan civilian employees of the UN Assistance Mission in Afghanistan, the Nato alliance said in a statement. Two ISAF service members and 53 Afghan civilians were also wounded in the incident, the International Security Assistance Force said. The UN in Kabul confirmed two of its local Afghan staff were killed and a third was wounded in the second deadly suicide attack targeting Nato in the capital in two days. Children were among the wounded and casualties were blackened from burns and bloodied from shrapnel, witnesses said. It was a suicide attack... targeting a supply convoy of foreign forces, said police official Sayed Abdul Ghafar Sayedzada. The Taliban claimed responsibility for the attack and for firing volleys of rockets into the capital and the eastern city of Jalalabad, where at least 10 people, mostly women and children, were wounded. A spokesman for President Hamid Karzai, who is widely expected to win the elections, confirmed that one rocket hit the outer perimeter of the presidential compound. In southern Afghanistan, the Talibans main powerbase, a suicide bomber walked up to an Afghan military checkpoint in Uruzgan province and blew himself up, killing three soldiers and two civilians, police said. In a sign that militants are widening their scope, attacks killed five people including an election candidate and three electoral workers in the usually peaceful north, officials said Tuesday. A roadside bomb killed two US soldiers in eastern Afghanistan, as US officials said the commander of US and Nato forces in Afghanistan, General Stanley McChrystal, was weighing ways to free up more soldiers for combat. Although thousands of US and Nato troops pushed into militant strongholds months before polling day, at least eight districts remain outside state control and up to 12 percent of polling centres may not open, authorities said. About 300,000 Afghan and foreign troops - every man available, officials say - will be deployed to guard between 6,200 and nearly 7,000 polling centres, with the final figure depending on security risks, authorities say.