Four injured in blast outside Quetta mosque.

KARACHI: At least four people were injured in an explosion outside a mosque on Quetta's Sariab Road on Friday, police said.

A video showed worshippers coming out of the mosque as an explosion was heard. According to police, some explosive material fitted on the motorcycle went off. Television footage of the scene showed the bike engulfed in flames with thick plumes of smoke blowing from it.

Quetta Deputy Inspector General Abdul Razzaq Cheema said the nature of the explosion could not be immediately ascertained and police were investigating if explosives were planted on a bike or if the vehicle caught fire. But another police official told a private TV channel that 1-1.5 kilogrammes of explosive material was left in a bag next to a motorcycle parked outside the mosque. He said the blast was caused after the detonator blew up but the explosives themselves didn't catch fire.

More destruction would have been caused if the explosive material had gone off, he added.

The wounded were shifted to the Civil Hospital for treatment. Police cordoned off the...