A fire broke out on the fourth floor of Lahore Electricity Supply Company (Lesco) headquarters after a powerful blast on Tuesday, reported 24NewsHD TV channel.
The explosion-like sound was heard from the room of Lesco Chairman Chaudhary Muhammad Ameen after which the blaze started on the fourth floor.
Authorities ordered evacuation of the Lesco office completely and immediately.
Lesco Headquarters is located at Queen’s Road in Lahore.
Reporter Shahid Sipra