Summary
Belgium raised the death toll from the Brussels attacks to 35 and charged three suspects Monday as police across Europe stepped up efforts to unravel an ISIS network linked to the carnage.
Police released a new video of a third suspect in the March 22 Zaventem airport attack, the so-called "man in the hat" seen with two other suicide bombers, who escaped after his bomb failed to explode.
Investigations continue into the core group of Brussels attackers, with police releasing video of a man in a hat and white jacket pushing a trolley with a large bag through the departure hall next to bombers Ibrahim El Bakraoui and Najim Laachraoui.
The Brussels attackers have close links to the November Paris attacks in which 130 people were killed, with bomb-maker Laachraoui's DNA being found on some of the explosives used in France.
Meanwhile metro bomber Khalid El Bakraoui, Ibrahim's brother, is believed to have rented a property linked to Paris prime suspect Salah Abdeslam, who was arrested in Brussels on March 18 .
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