The 29-year-old Frenchman arrested over the fatal shooting of three people at Brussels' Jewish Museum, has admitted to the killings, authorities said.
Mehdi Nemmouche is said to have admitted to the shooting in a video recording he was carrying while arrested in France.
"(In the video) he states that he committed the attack in Brussels against the Jews," Belgian federal prosecutor Frederic Van Leeuw said at a press conference.
More top news
An man is reported to have wounded at least five people - two seriously - in an attack in the Swiss town of Schaffhausen.
Donald Trump's son-in-law has denied any improper conduct during four contacts with Russians during and after the presidential election.
Police are appealing for witnesses after Sunday night's incident, which is not being treated as terror-related.