PESHAWAR: A blast at a centre of the banned outfit, Lashkar-i-Islam, late on Thursday killed at least three and injured four in Khyber Agency, DawnNews reported.

According to official sources, the blast took place in Tehsil Bara of the troubled Khyber Agency alongside the Afghanistan border.

Banned organisations often attack each other in the area rife with religious militancy. However, no such group has yet accepted the responsibility of the attack.