A man lights a candle in tribute to victims at a makeshift memorial in front of the stock exchange at the Place de la Bourse (Beursplein) in Brussels on March 22, 2016, following triple bomb attacks in the Belgian capital that killed about 35 people and left more than 200 people wounded. A series of explosions claimed by the Islamic State group ripped through Brussels airport and a metro train on March 22, killing around 35 people in the latest attacks to bring bloody carnage to the heart of Europe. AFP PHOTO / THIERRY MONASSE / AFP / THIERRY MONASSE

The twin bomb attacks on Brussels airport Tuesday may have been carried out by two suicide bombers and the police are “actively looking” for a third attacker, the federal prosecutor said.

“There is a photo of three men taken at Zaventem airport and it is possible that two of them carried out a suicide attack while the third is being actively sought,” federal prosecutor Frederic Van Leeuw said, after police issued a wanted notice for the man.

A man lights a candle in tribute to victims at a makeshift memorial in front of the stock exchange at the Place de la Bourse (Beursplein) in Brussels on March 22, 2016, following triple bomb attacks in the Belgian capital that killed about 35 people and left more than 200 people wounded. A series of explosions claimed by the Islamic State group ripped through Brussels airport and a metro train on March 22, killing around 35 people in the latest attacks to bring bloody carnage to the heart of Europe. AFP PHOTO / THIERRY MONASSE / AFP / THIERRY MONASSE