Gunmen attack Karachi's Jinnah International Airport
Heavily armed gunmen have attacked Karachi's international airport, killing at least four security guards and hurling grenades, reports say.
Pakistan media reported between four and 10 gunmen had attacked Jinnah International Airport's old terminal.
Dawn News said security personnel had surrounded the airport and sealed off roads.
All flights at the terminal have been suspended and flights are being diverted, it said.
The security guards killed were part of the Airport Security Force (ASF).
Dawn said the gunmen had infiltrated the area using forged identity cards.
There is no indication yet who is carrying out the attack.