PESHAWAR (Agencies) - At least 14 people were injured Tuesday in a grenade attack in Peshawar, police sources said. According to security sources, some unknown miscreants riding on a motorcycle lobbed a hand grenade at an electric pole in the Shafi market in the cantonment area of Peshawar. The impact of the blast also destroyed a transformer at the pole damaging some nearby shops. People were injured in the destroyed shops.