The blast happened late Friday at the 10-storey Kawish Crown Plaza building near Karachi's Quaid-e-Azam international airport at about 1530 GMT, AFP reported

  

It was not immediately clear if anyone was killed or injured in the explosion.

 

“There was a blast at Kawish Crown Plaza building and we are trying to find out if there were any casualties," a police spokesman, who declined to be named, said.