BRUSSELS, Belgium (AP) _ NATO is deeply concerned about reports that a correspondent for a German television network disappeared last week in Yugoslavia, an alliance spokesman said Tuesday.

Pit Schnitzler, southeast Europe correspondent for the SAT-1 network, reportedly left Belgrade around midday Friday and was to have contacted his editors after reaching the Croatian border about an hour later, Jamie Shea said during the daily NATO briefing.

He said the network's officials and other sources have reported that they lost contact with Schnitzler. Shea said the correspondent was supposed to be on his way home after having his equipment and car seized by Serbian authorities.

The network hasn't heard from him since before he reportedly left Belgrade, Shea said.

The station said it had instructed Schnitzler, who is based in Vienna, Austria, to leave Belgrade because the loss of his equipment and car made it impossible for him to work.

The German government has asked Japanese diplomats, who are representing German interests in Belgrade, to investigate.