Fire suddenly erupted in a record room of the Federal Investigation Agency (FIA) office at Saddar in Karachi on Monday, damaging computers and the files kept in it, reported 24NewsHD TV channel.
However, the firefighters soon managed to extinguish the blaze.
No loss of life was reported in the incident.
Fire erupt at arms depot in Mirpurkhas
Also on Monday, a fire erupted at an arms depot in police lines in Mirpurkhas after a teargas shell exploded.
Soon after learning about the incident, firefighting teams rushed to the site to douse the flames.
Reporters: Salman Saleem and Zeeshan Sheikh