Two bombs in quick succession rocked a train station in Algeria on Sunday, killing 13 people, including a French engineer and Algerian firefighters and soldiers who responded to the first blast, a security official said.

The first bomb killed a French man working on a renovation project at the station in Beni Amrane, about 100 kilometres east of the capital, Algiers, the official said. The second bomb hit minutes later, as security officials and rescue workers arrived at the scene. Both devices appeared to be remote-controlled.

There was no immediate claim of responsibility. Algeria's al-Qaeda affiliate, al-Qaeda in Islamic North Africa, is known to be active in the area.

The French engineer, working on a project to boost the number of rail lines at the station, was killed as he prepared to leave the site in a car, said the official, who spoke on condition of anonymity because he was not authorized to talk to media. The man's Algerian driver was also killed.

France's Foreign Ministry said it was in contact with Algerian authorities about the attack but provided no other details.

The second bomb came about five minutes later. Eight soldiers and three firefighters were killed in that explosion, the official said. Several others were wounded, though the exact number was unclear.

The North African nation's Islamic militants have mounted several attacks over the past week. On Wednesday, a suicide attack on a military barracks and a second bombing at a café shook a beach neighborhood outside the Algerian capital, wounding six people. A day later, a roadside bomb killed six soldiers in the city of Boumerdes.

The attacks of the past week have come as Algerian President Abdelaziz Bouteflika prepares to inaugurate an international trade fair Monday outside Algiers, a high-profile event that will draw members of foreign governments.

Although Algeria has battled an Islamic insurgency for years, the number of attacks has risen dramatically since the country's main militant group vowed allegiance to al-Qaeda in 2006.

Most of the country's bombings have been claimed by al-Qaeda in Islamic North Africa, formerly known as the GSPC. The group grew out of an insurgency that raged in the country in the 1990s. The violence, which has left as many as 200,000 dead, was prompted by the army's cancellation of legislative elections in 1992 that an Islamist party was poised to win.

Many attacks in Algeria have targeted the national security services and military, while others have struck foreigners.

Sunday's attack was apparently crafted to hit both of those targets. In December, a double suicide bombing in Algiers killed 41 people, including 17 UN workers. In April 2007, co-ordinated suicide strikes against the main government offices in central Algiers and a police station killed 33.