Pakistani authorities said gunmen attacked a bus in Karachi Wednesday, killing at least 45 people, including 16 women, all of whom belonged to the minority Shi'ite Ismaili Muslim community.
45 Killed as Gunmen Attack Karachi Bus

1
Security officials cordon off an area where gunmen attacked passengers on a bus in Karachi, May 13, 2015.

2
Women mourn as they visit a local hospital following an attack on a bus in Karachi, May 13, 2015.

3
A hospital official wearing a bloodstained shirt stands outside the hospital where the victims of a shooting attack were transported, in Karachi, May 13, 2015.

4
Crowds gather outside a hospital after an attack on a bus in Karachi, May 13, 2015.