Authorities interviewed Israeli pair after they were seen at Tomorrowland music festival near Antwerp

Belgian authorities have said they briefly held and questioned two Israeli citizens who attended an electronic music festival last week, after pro-Palestinian groups accused them of war crimes.

Prosecutors said they had received legal complaints alleging that two Israeli soldiers responsible for “serious violations of international humanitarian law” in Gaza were spotted at the Tomorrowland festival near the northern city of Antwerp.