[Jessica.]

Pakistani military has been called in and police are fighting the attackers, official says.

An official in Pakistan says gunmen have attacked a terminal at Karachi's international airport.

Shaukat Jamal, a spokesman for the Airport Security Force, says there were initial reports that at least four security officers had been wounded, but he had no other information. Pakistani television stations aired live footage of what appeared to be a major fire at the airport, with the silhouette of a jet seen.

Jamal said the Pakistani military has been called in and that police are fighting the attackers.

The attack happened at a terminal not generally used for commercial flights but for special VIP flights.

Karachi is Pakistan's largest city and has been the site of frequent militant attacks in the past.

Up to ten heavily armed terrorists began an attack on Karachi airport in Pakistan on Sunday evening - killing at least five airport security officials
The airport is the largest in Pakistan and all flights have now been diverted away as the battle unfolds
According to local Pakistani media - the army has been drafted into to battle the terrorists who are armed with explosives
Pakistani media is broadcasting live pictures of what appears to show an aircraft on the tarmac ablaze
Five killed in the attack and up to 15 others injured according to initial reports

Terrifying.