Suspected Islamic rebels killed 11 Algerian civilians, including two children, in two separate overnight raids outside Algiers.
The rebels killed five people in the Hay Makam slum in the small town of Douera, 20 km (12.5 miles) southwest of Algiers before midnight last night.
Two children aged three and four years were among the dead. Two people were also wounded. The official Algerian news agency, APS, said today the "same group" then killed six more civilians about one-and-half hours later in another area of Douera.
Earlier, hospital and security sources said the 11 civilians were killed in a single raid on a slum area in Khraicia, a small town near Douera.
Twelve passengers were killed on Tuesday when gunmen sprayed their bus with machinegun fire in at Medea, 70 km (43 miles) south of Algiers.
It was the bloodiest attack against civilians since the North African nation elected a new parliament on May 30. The former ruling National Liberation Front (FLN) won 199 of 389 seats in the legislative body.
In another incident an explosion wounded 14 people at a cafe in Djelida, 130 km (80 miles) south west of Algiers. State media said two suspected Islamist rebels planted the bomb.
Algeria has been wracked by violence since early 1992 when the authorities cancelled a parliamentary election that radical Islamists were poised to win.
More than 100,000 people have been killed since then, the government says, although independent sources put the number of deaths as high as 150,000.