An explosion in Gujrat severly injured four people including three children on Monday. However, police have not determined the nature of the blast.

Rescue officials said that all four people injured in the blast have been transferred to the District Headquarter Hospital, where they are said to be in a critical state.

The injured people have been identified as Afnan (3), Faizan (7), Shehzad (12) Rizwan (22).

Bomb disposal squad said it was still checking if the blast was the result of a hand grenade or land mine.