BEIRUT (Reuters) - Lebanon's Amal movement said it was responsible for a Wednesday bomb attack that it said killed an intelligence officer in the Israeli-run Lebanese militia and wounded several Israelis. A source with the Israeli-run South Lebanon Army said in Marjayoun the dead man worked in SLA intelligence and said an SLA intelligence officer, Samir Ruslan, was wounded, along with three members of Israeli intelligence. He said the two Lebanese had gone together to the border. Israeli sources said only that one Lebanese was killed and three Israelis, one of them a sapper, was wounded by the bomb. Israeli reports were subject to military censorship. The bomb, concealed in a video cassette, went off just inside Israel at a crossing from the Israeli-occupied south of Lebanon, according to SLA and Israeli sources. "A group of our guerrillas gave a blow to the intelligence operation of the Israeli army by detonating a very sophisticated bomb against a number of its officers," the pro-Syrian Amal movement said in a statement. The statement said Ruslan had been killed. The border was immediately sealed and later Israeli warplanes made mock raids over the pro-Iranian Hizbollah guerrilla stronghold of Iqlim al-Touffah just north Israel's south Lebanon occupation zone. The bomb exploded after the man who was killed crossed from the Lebanese village of Kfar Kela to the Israeli town of Metulla, a main entrance point into Israel's self-declared security zone in south Lebanon. Israel, which first occupied the area in 1978, holds a 15 km (nine miles)-wide buffer zone in south Lebanon with the declared aim of preventing Arab guerrilla attacks on its northern border towns. Most guerrilla attacks against the Israeli occupation forces are carried out by Hizbollah (Party of God) fighters but Amal and Palestinian guerrillas mount occasional operations.