German police are investigating an attack on an Israeli who was beaten by a group of young men after he asked them to stop singing anti-Semitic songs on the Berlin subway on New Year's Eve.

Spokesman Martin Dahms said Monday police are still looking for the attackers.

The victim, 26-year-old Shahak Shapira, who lives in Berlin, told The Associated Press that after he asked the seven men to stop chanting anti-Jewish songs, he recorded them on his cell phone.

When he got off at the next stop, the men, who Shapira says were speaking both German and Arabic, followed him and demanded he delete his video. When he refused, some of the men spat on him and beat and kicked him, injuring his head.