A Palestinian killed during an Israeli army raid on his home in the West Bank town of Birzeit was buried Friday, an AFP correspondent said. Motazz Washaha was found dead after the Thursday morning raid by the army, which said he was "suspected of terror activity." Some 4,000 mourners took part in the funeral at Birzeit, north of the West Bank administrative centre of Ramallah, calling on Palestinian factions to unite and avenge Washaha's killing. He was identified by neighbours as a member of the leftist Popular Front for the Liberation of Palestine, and the movement's flags were visible at the funeral.