Two children were killed and one injured when a hand grenade accidentally exploded in Pakistan's northwest tribal area of Bajaur Agency on Sunday, local media reported.

Urdu TV channel 24 News said the two shepherd brothers aged between six to 10 years old and their seven-year-old female cousin were playing in the mountains when they found the grenade in Khaista Baba area of Bajaur, a semi-autonomous tribal region along Pakistan-Afghanistan border.

Police said the kids mistook the grenade as a toy and were playing with it when it accidentally went off.

The injured girl was shifted to a nearby hospital where she is said to be in critical condition.

There are no reports as to who put the grenade in the area.

source: Xinhua