BRUSSELS (AP) — A music festival in Belgium featuring major stars like rapper Cardi B has come to an abrupt end amid security concerns and a fraud investigation.

VestiVille was canceled Friday, the start of the three-day event, with thousands of festival-goers on the grounds in Lommel, in Belgium's Flemish region.

Quoting Flemish press, Belgium's RTBF network said Saturday that the Limbourg prosecutor's office has opened an investigation on suspicion of fraud over payments and quoted spokesman Jeroen Swijssen as saying three festival organizers were questioned Friday night.

VestiVille tweeted Friday that Lommel Mayor Bob Nijs stopped the festival on security grounds. The tweet said that after consulting security services and security for star rapper A$AP Rocky, "it was decided that the safety of the artist and the public could not be guaranteed."