The man arrested in France on suspicion of killing three people at Brussels' Jewish Museum has been carrying a Kalashnikov wrapped in a flag with the inscriptions of a militant Islamist group, prosecutors said.
Mehdi Nemmouche, carried the flag of the Islamic State of Iraq and the Levant (ISIL), an ultra-conservative militant group reconstituted from an earlier incarnation of al Qaeda and active in Syria and Iraq.
The 29-year-old Frenchman is said to have returned recently from fighting with Islamist militant rebels in Syria, prosecutors said.
More top news
David Cameron will soon no longer be Conservative leader or prime minister. But who could replace him? We look at the potential contenders.
Jeremy Corbyn faces full rebellion over decision to not step down as leader.
"People must be aware at all times that there are wild animals around them and they must make sure that their tents are properly closed."