KINSHASA, Congo — The U.S. Treasury Department is imposing sanctions against two leaders of Congo's M23 rebel group.

In a designation made public Tuesday, the U.S. government accuses Baudoin Ngaruye and Innocent Kaina of using child soldiers.

Ngaruye also was cited for targeting children through "killing, maiming, and sexual violence."

The move comes just weeks after a U.N. Security Council sanctions committee added the two men to its consolidated travel ban and asset freeze list.

Both men are leaders of the M23 rebels, who allegedly are supported by Rwanda, and whose rebellion earlier this year prompted hundreds of thousands to flee their homes in eastern Congo.

Any assets they have within U.S. jurisdiction now will be frozen, and Americans will be prohibited from doing business with them.