msnbc.com news services report from PESHAWAR, Pakistan:
Gunmen opened fire on a school bus in the Pakistani city of Peshawar on Tuesday, killing at least three children, a teacher and the driver, a police official said.
Fifteen children were wounded, he said. The children on the bus were around nine years old.
"First a rocket was fired, but it didn't hit. Then gunmen opened fire," said Sahibzada Sajjad, deputy superintendent of police in Peshawar, where Taliban militants, who are close to al-Qaida, often carry out attacks. Continue reading.

Fayaz Aziz / Reuters
A tear runs down a boy's face as he lies on a bench after being treated for his injuries at the Lady Reading Hospital in Peshawar, Pakistan, on Sept. 13. Gunmen opened fire on a school bus in Peshawar on Tuesday, a police official said.

Bilawal Arbab / EPA
Security officials inspect the school van which was attacked by unknown gunmen on the outskirts of Peshawar on Sept. 13.

Arshad Arbab / EPA
Schoolboys who were injured when unknown gunmen opened fire at their school van, receive medical treatment at a local hospital in Peshawar on Sept. 13.