Gunmen disguised as police guards stormed the international terminal in Karachi, set off explosions and killed 18 people. All 10 gunmen died in the battle.
The Pakistan Taliban claimed responsibility for the attack, saying the assault was revenge for army airstrikes on their strongholds near the Afghan border and the the killing of Hakimullah Mehsud, the Taliban chief who died in a drone strike last November.
ITV News Correspondent Sejal Karia reports:
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British Airways said it was taking the matter "extremely seriously" and is assisting police with their enquiries.
The rest of this weekend will see further spells of rain or snow across the UK. Icy roads expected