BERLIN (AP) _ A man brandishing a handgun forced his way into a Berlin television studio Thursday and appeared on air for several seconds before the broadcast could be shut down.

The man remained alone in the studio at Berlin's n-tv news station for about an hour before police stormed the room and overpowered him shortly after 8 a.m., a police spokeswoman said.

Police did not release the man's name but said he was 23 years old.

The man demanded to see the station chief and threatened to shoot himself, police said. He allowed two news personnel in the studio to leave unharmed, and his revolver turned out to be unloaded.

Police said the man apparently believed he was on live television for the entire time he was in the studio. During the standoff, n-tv broadcast news on tape.

N-tv is a German-language 24-hour news station partly owned by Time Warner, the parent company of CNN, which has facilities in the same building.