There is no evidence the fatal shooting of three people in Brussels was anti-semitic, a spokeswoman for the prosecutors office has said.
Ine Van Wymersch said there was "no clear information about the perpetrator."
She added: "Regarding the motive, we have little information. Everything is possible."
More top news
Serena Williams may have ended her big sister Venus' best chance for an eighth major title to keep her calendar grand slam bid on track
A service has been held to remember the thousands of men and boys killed in the Srebrenica massacre 20 years ago.
Cloudy skies expected for most, with rain from the west becoming widespread.