An unidentified traveler runs through the smoke filled terminal at Brussels Airport after explosion rocked the terminal Tuesday morning.
Brussels under attack
00:59 - Source: CNN

Story highlights

Suspects involved in the plot remain at large, officials warn

Brothers Khalid and Ibrahim El Bakraoui were suicide bombers, prosecutor says

ISIS claimed responsibility for attacks at airport and a metro train in Brussels

CNN  — 

Three days after coordinated terrorist attacks killed 31 people and injured 300 more in Brussels, investigators are still searching for suspects.

ISIS claimed responsibility. Details are emerging about the men behind the attacks, their victims and the possibility that more plots could be in the works.

Here’s what we know so far:

The attacks

Airport: At 7:58 a.m. local time Tuesday, two suicide bombers struck the departure lounge of Brussels Airport in Zaventem about 37 seconds apart, killing at least 10 people.