A bomb at a police college east of the Algerian capital, Algiers, has killed 43 people and injured a further 38, the interior ministry says.
The attack targeted a paramilitary police training school at Issers, near Boumerdes, about 60km (40 miles) east of Algiers.
An attacker drove a car full of explosives into the school's entrance, witnesses told AFP news agency.
Algeria has suffered regular attacks blamed on militants linked to al-Qaeda.
Tuesday's attack came as exam candidates were waiting outside the police school, the witnesses said.
Civilians as well as security officials were among the victims, they added.
In one of the most recent attacks in Algeria, a suicide bomber at a beach resort killed eight people on 10 August.
In December two consecutive bombings in Algiers - including one at the UN offices - killed at least 37 people.
The attacks were claimed by the North African branch of al-Qaeda, known as al-Qaeda in the Islamic Maghreb.
No immediate claim of responsibility for Tuesday's bombing was reported.
Source: thedailystar.net