More than 400 people have died from heatstroke in the southern Pakistani port city of Karachi in the last three days, officials have said.

Gunmen disguised as police guards attacked a terminal at Pakistan's busiest airport with machine guns and a rocket launcher, killing at least 13 people as explosions echoed into the night.

Gunmen disguised as police guards stormed an airport terminal used for VIPs and cargo in Pakistan’s largest city tonight, killing at least nine people as explosions echoed into the night.

A roadside bomb ripped through a bus taking Pakistani navy staff to work in Karachi today, killing three people in the third such attack in the country’s largest city this week.