Around 50 Islamic students broke into the grounds of a Dutch consulate building in Indonesia during a protest Wednesday against an anti-Muslim film by a Dutch lawmaker, an embassy official said.

The protesters ripped down the flag from the building in the western city of Medan, said Dutch Embassy spokeswoman Gonneke De Ridder.

Radio station el-Shinta reported protesters also threw stones at the consulate and set the flag alight, but she could not confirm that.

The 17-minute film by anti-immigration politician Geert Wilders intersperses scenes of recent terror attacks by Muslim extremists with versus from the Koran, Islam's holy book. It has been condemned as racist and misleading by governments around the world.