Six people have been killed and several injured after a shooting in southwestern Germany.

The suspect was arrested after the attack in the town of Rot am See on Friday afternoon, police said.

Rudolf Biehlmaier, a police spokesman, told German broadcaster n-tv: "According to my information, there were six dead and several injured.

The suspect was arrested after the attack in the town of Rot am See on Friday afternoon, police said. Credit: AP

“We are working on the assumption that this was a single attacker."

Biehlmaier said the initial information suggested the suspect, a German citizen, and one or more of the victims, knew each other.

Some of the victims belonged to the same family, he added.

In a statement, police said further information would be released at a news conference with prosecutors and local officials at 4.30pm.

Rot am See is located about 105 miles northwest of Munich.