QUETTA: Unknown gunmen opened fire on two buses in Balochistan's district of Bolan, in which four people were killed and 10 others injured, DawnNews reported.

In the first incident, armed men opened fire on a bus traveling from Quetta to Sadiqabad. As a result of the shooting, two people were killed, sources said.

In the second incident, which occurred near Balanari, gunmen opened fire on a bus traveling from Quetta to Nawabshah, which killed two people and injured 10 others.