Three foreign troops were killed in separate attacks during Afghanistan's parliamentary elections, dpa quoted the military as saying on Sunday. The NATO-led International Security Assistance Force (ISAF) said two soldiers were killed by a roadside bomb, while another died in an insurgent attack in northern part of the country. ISAF did not reveal the nationalities of the soldiers, nor say if they were taking part in election-related operations. Around 150,000 US and NATO forces were standing by during the polls to provide assistance for more than 110,000 Afghan troops deployed to more than 5,000 polling sites across the country. Saturday's polls saw 305 violent incidents, compared to 422 incidents during the August 20, 2009 presidential election, the defence minister said. A total of 11 civilians, four security personnel and 27 Taliban militants were killed in shortly after voting began, security officials said.