Mangaluru: A 19-year-old youth was arrested for allegedly molesting a German girl at Deralakatte near here, police said today. 

The youth who followed the 18-year-old German student, who had come to visit an ashram at nearby Panir as part of her research, they said. 

He way laid her while he was walking along the road and molested her. 

Hearing her screams, the locals gathered and beat him up black and blue before handing him over to the police, the sources said. 

Family members of the youth told the police he is mentally unstable and had been receiving treatment at the Wenlock hospital here. 

A case has been registered in this connection, police said.