Chechen extremist 'mastermind behind Istanbul airport attack'

A Chechen extremist was the mastermind behind the triple suicide bombing at Istanbul's busiest airport which killed at least 44 people, a US congressman has said.

Michael McCaul, chairman of the House Committee on Homeland Security, told CNN that Akhmed Chatayev directed Tuesday night's gun-and-bomb attack at Ataturk Airport, which also wounded more than 230 other people.