(IsraelNN.com) Neo-Nazi leader Horset Mahler is going back to jail, sentenced to a six-month imprisonment for giving the 'Heil Hitler' salute in violation of German law.

The 71-year-old neo-Nazi confessed to the salute when he began serving a prison term for a different crime – one of six for which he has been convicted, including denying the Holocaust and praising the 9/11 attack on the World Trade Center.

Mahler praised the September 11, 2001 Al-Qaeda terrorist attack on the United States, which struck the Pentagon simultaneously with the destruction of the Twin Towers in New York City as "eminently efficient." A third attack by the Al-Qaeda terrorists was attempted at the same time but was stymied by passengers on the hijacked airliner which crashed in Pennsylvania, missing its intended target in Washington D.C.

Unrelated Attack
Over the weekend, officials released the report of a 17-year-old girl who said four neo-Nazi men held her down and carved a swastika on her hip after she tried to stop them from harassing a six-year-old girl from the former Soviet Union.

The attack took place three weeks ago in the town of Mittweida, and was confirmed by the six-year-old child.

No arrests have been made in the case.

Around the World
Neo-Nazism is also on the rise elsewhere in the world as well.

Most recently, anti-Semites in the U.S. scrawled swastikas in three different states, following a spate of similar incidents at Columbia University in New York.

Three black swastikas were spray-painted on the walls of an Orthodox Jewish day school in suburban Baltimore. Racial slurs were also painted on nearby roads.

Two more incidents were reported at a Minnesota university, where several large swastikas were found on a bathroom mirror. Another was burned into an elevator ceiling, and still others were carved into the wall of a computer lab.

Neo-Nazi vandalism was also reported in New Mexico, where swastikas were discovered painted on three cars, with profanity scrawled on a fourth vehicle.