Police search for motives in Serbian gunman rampage that killed 13 people in quiet village

Serbia is in mourning as police search for possible motives in the Balkan country's worst peacetime shooting massacre, which left 13 people in a sleepy village dead.

Police say a 60-year-old veteran went on a pre-dawn, house-to-house rampage Tuesday in a village near Belgrade, including killing his mother, his son and a two-year-old cousin before shooting himself and his wife. The two are in critical condition in a Belgrade hospital.

Police say they have no clue as to why the suspect, identified as Ljubisa Bogdanovic, went on the rampage. They know that he fought in one of the bloodiest sieges of the Balkan wars in the 1990s, and lost his job a year ago.

Police chief Milorad Veljovic said Wednesday the suspect's injured wife could provide the motive.