A car bomb ripped through a police bus in central Istanbul during the morning rush hour on Tuesday, killing 11 people and wounding 36 near the main tourist district, a major university and the mayor's office, Reuters reported. The car was detonated as police buses passed, Istanbul Governor Vasip Sahin told reporters. "A car-bomb attack was made against vehicles carrying our rapid-response police and passing by on the road, resulting in seven police and four civilians losing their lives," Sahin said. Three of the 36 wounded were in critical condition, he added. The blast hit the Vezneciler district, between the headquarters of the local municipality and the campus of Istanbul University, not far from the city's historic heart. It shattered shop windows and scattered rubble over nearby streets.