Up to 30 people have been killed in two bombings in Algeria and hundreds more wounded, reviving memories violence which gripped the north African country in the 1990s. One of the bombs, believed to be a suicide attack, targeted the Algiers headquarters of the Prime Minister, who escaped unharmed. Another hit a police station in a suburb of the city. A group calling itself the Al Qaeda Organisation in the Islamic Maghreb has claimed responsibility for the attacks.