KARACHI: Four people were injured when a hand grenade exploded near Karachi's Hyderi market on Monday, DawnNews reported.

According to witnesses, the attackers came on motorcycles and lobbed the hand grenade at the franchise office of a cellular phone company.

The grenade exploded wounding four people.

A police contingent arrived at the site of the incident soon after the explosion and cordoned it off.

The wounded were shifted to the Abbasi Shaheed Hospital.