Herzegovina, Dec 24, SPA -- NATO detained a former Bosnian Serb policeman suspected of being part of a support network helping war crimes suspects evade justice, the alliance said Thursday. Dusan Tesic was taken to a secure location for questioning. "NATO believes that this individual has valuable information" on a network aiding those indicted for war crimes, NATO said in a statement. This is the second time this year that Tesic has been detained by NATO for questioning. He spent 33 days in January and February in a NATO facility while he was under investigation.