A pair of suicide bombers attacked Egyptian police and international peacekeepers in the northern Sinai peninsula today, two days after deadly explosions at a resort in the region.

The first bomber detonated an explosive device at a passing vehicle in the town of al-Gura carrying soldiers from the Multinational Force & Observers and Egyptian officials, the force said in an e-mailed statement. The second attack targeted an Egyptian police vehicle, and there were no injuries in either.

Authorities are trying to determine the identities of the dead bombers, one of whom was a Bedouin, a government spokesman, Magdy Rady, said in an interview. Initially officials said that the bombers targeted a police officer and that peacekeepers came to his aid.

The Multinational Force & Observers are an independent organization set up in 1979 to supervise security provisions of the peace treaty between Israel and Egypt. The soldiers come from 11 countries, including America, Australia, France, Canada, and Uruguay, according to the force’s Web site.

The peacekeepers in the attacked car were one each from Norway and New Zealand, the force said in its statement. The second attack targeted a car containing police who were going to investigate the first explosion, an Interior Ministry spokesman said.