Algerian Defence Ministry announced today that four militants were killed in Al Barqawiya area in province of Mediya in western Algeria.In a statement the Ministry said the Algerian army managed last night to kill four militants in an ambush laid in Awlad Manna area.Last week the Algerian army killed two militants one of them the deputy commander of the so-called the Al-Qaeda in the Islamic Maghreb (AQIM).