Ibrahim El Bakraoui (top left, and circled centre right), who helped kill 14 people when he set off his suicide vest at Brussels airport yesterday, left his will in the bin of the terror cell's Schaerbeek safehouse. The note, found next to 15kg of homemade explosives, an AK-47 and an ISIS flag, said: 'I don't know what to do. I'm in a hurry. I'm on the run. People are looking for me everywhere. And if I give myself up then I'll end up in a cell.'

Brussels master bombmaker Najim Laachraoui (above) - known as the 'Man in White' - is still on the run today after evading a series of special forces raids following the deadly attacks which killed 34 yesterday.

This morning Belgian media reported that the ISIS explosives expert was taken alive by a SWAT team inside a pizzeria in the Anderlecht suburb of the city - but Belgium's chief prosecutor says 'he is still at large'.

The latest twist came after Belgian brothers Ibrahim and Khalid El Bakraoui, who blew up the Metro train killing 20, were named as two of the ISIS suicide bombers - eight days after they escaped police in a gunfight - and it is now clear there is a mystery fourth suicide bomber.

Laachraoui was already one of the world's most wanted men, having built the suicide vests that helped kill 130 in Paris last November, and went on the run with Salah Abdeslam before hiding in Brussels for four months.