The Pakistani military has been called in as police continue to fight attackers at Karachi's Jinnah International Airport, a spokesman for the Airport Security Force has told the Associated Press news agency.
The attack took place at a terminal usually reserved for special VIP flights.
More top news
A Ukrainian pilot who spent two years in prison in Russia has been sworn into national parliament after being released last week.
The length of time people returning from Zika-hit areas should abstain from having unprotected sex has been doubled by the WHO.
Two young boys have gone missing and their families are "frantic with worry".