Three members of the deviant group armed with guns and hand grenades were killed in a clash with the Saudi security forces, said an official source at the Interior Ministry here on Tuesday. Seven of the security men were wounded in the confrontation with these members of the deviant group, who were hiding on the second floor of a house in Al-Nahda Neighborhood, in Eastern Riyadh. The security men evacuated seven women and a child who were placed at the first floor to be used as shields and to mislead the security forces. The official source pointed out that the security forces surrounded the house after suspecting that men of the deviant group were hiding in it. 'When the security men began searching the house, they came under heavy machine gun fire, said the official source adding that that the attackers also used hand grenades. The security men found weapons and documents in the house, the statement added.