Belgian prosecutors have released new CCTV images of the "man in the hat” suspected of leaving a bomb at Brussels airport in an Islamic State terror attack.
The suspect appeared to arrive at the airport with two suicide bombers and left before the bombs exploded, federal prosecutors said.
In a video accompanying the appeal, viewers are shown the route he took away from the airport at 7.58am, travelling through the town of Zaventem and along a main road.
He was last seen on video footage at Meiser square in northeastern Brussels at 9.42am.
Investigators are now looking for a light-coloured coat he took off during the journey and want to speak to anyone who may have captured him on camera.
Prosecutor Eric Van Der Sypt told a news conference today: "It is especially the coat which interests us."
The two suicide bombs, along with an attack on one of the city’s Metro stations, killed 32 people.
A controlled explosion destroyed a third bomb at the airport about six hours after the initial attack.
MORE ABOUT