NAIROBI, Kenya -- A top military official says that U.S. troops are now deployed in four central African countries as part of U.S. efforts against a brutal rebel group called the Lord's Resistance Army.

Rear Adm. Brian L. Losey, the top U.S. special operations commander for Africa, said Wednesday that U.S. troops are now stationed in bases in Uganda, Congo, South Sudan and the Central African Republic.

The U.S. announced in October it was sending about 100 U.S. troops -- mostly special operations forces -- to central Africa to advise in the fight against the LRA and its leader Joseph Kony.

Losey said officials are already seeing a decrease in the lethality of LRA actions, which he thinks is part of the pressure the U.S. and partner countries are applying.