Belgian police have identified a prime suspect in Tuesday's Brussels blasts and two suspected suicide bombers, linking them directly to Islamic State militants behind last November's Paris attacks.

Najim Laachraoui, 25, is believed to be the man seen on CCTV pushing a baggage trolley alongside the bombers and then running out of the Brussels airport terminal. The alleged Brussels bomb-maker’s DNA was found on two suicide belts used in the Paris attacks.