ABUJA, May 1 (Xinhua) -- The United State Naval Forces has expressed concern over terrorist activities in Africa.

Admiral Mark Fitzgerald, commander of U.S. Naval in Africa and Europe, disclosed this in Abuja on Friday when he visited Nigeria's Chief of Defense Staff (CDS), Air Chief Marshal Paul Dike in his office.

Fitzgerald called for collective efforts to combat the ugly phenomenon of terrorism.

He said the U.S. government would assist Africa in solving its problems, stressing those African problems would be given African solutions because each of the sub regions had its peculiar problems.

The visiting U.S official praised the Nigerian military for its leading role in maintaining peace in Africa and called for more future cooperation among the two nations.

Responding, the CDS expressed appreciation on the efforts of the U.S. government for showing interest in improving the capacity of Nigeria's Armed Forces in the area of training.

Dike called for more collective efforts in combating terrorism, which is a global phenomenon.

The CDS was presented a Medal of Excellence by the U.S. High Command.