More than 600 prisoners escaped during a brazen Taliban bomb and rocket attack on the main prison in southern Afghanistan that knocked down the front gate and destroyed a two-story police checkpoint, a police official said Saturday. At least nine police were killed. The complex attack late Friday included a truck bombing at the main gate, a suicide bomber who struck a back wall and rockets fired from outside, setting off a series of explosions that rattled Kandahar, the country's second biggest city. A Taliban spokesman, Qari Yousef Ahmadi, said 30 insurgents on motorbikes and two suicide bombers attacked Sarposa Prison and freed about 400 Taliban members. Police official Mohammad Jamal Khan said more than 600 prisoners escaped. He said nine police were killed and 12 were wounded. Eight prisoners also died in the assault, he said.