Philippine military soldiers have clashed with Islamic extremists Tuesday, killing at least one and wounding a senior leader of the al-Qaida-linked Abu Sayyaf group.

Military officials say they believe that Abu Solaiman, a wanted Abu Sayyaf leader, was injured during the fighting. Solaiman is wanted by the United States for his alleged role in kidnappings and terror attacks. The U.S. government is offering a $5 million reward for his capture.

Army soldiers clashed with 60 Abu Sayyaf extremists in a mountainous town on the southwestern Philippine island of Jolo. Officials say they found bomb-making materials at the camp after members of the group fled.

Some information for this report was provided by AFP, AP and Reuters.