BELGRADE - One person was killed and 25 were injured on Tuesday by an explosion at a military repair depot in the central Serbian town of Kragujevac, the defense ministry said. A search for another three missing workers was continuing, it said in a statement. The blast occurred at around 1.20 p.m. after a fire broke out in a section for decommissioning ordnance, Tanjug news agency reported. The repair depot in Kragujevac, founded in 1853, is situated outside residential areas.