Police say five attackers used wooden poles to smash the entrance door and another window on the center in Novi Sad early Monday.

Local Muslim religious leader Mirza Murati says the attack was an “act of vandalism and attack on all Muslims.”

He says “we thought this was behind us, but Muslims still feel insecure.”

Police say a search for the attackers is under way.

Serbia has seen a rise in far-right extremism since the ethnic wars of the 1990s’. Extremists have attacked foreigners, ethnic minorities and gays.