Bogota, Colombia ? The head of the Colombian anti-narcotics police force was reassigned Friday after a “significant amount” of millions of dollars in U.S. funds earmarked to fight drugs vanished.

State Department spokesman Richard Boucher said about $2 million had disappeared.

The widening corruption scandal already had led to the suspension of some U.S. aid to Washington’s key drug war ally and the dismissals of at least 12 police officers.

Gen. Gustavo Socha was reassigned to a police unit that provides security to dignitaries, said Gen. Ernesto Gilibert, chief of the Colombian National Police.

He said Socha had not been found personally involved in any wrongdoing, calling him “an honest man, a transparent man,” but said he had to go to lend “transparency” to the investigation into the missing funds.

Thursday, the U.S. Embassy said it had suspended some aid to the counter-narcotics police after discovering two months ago that a “significant amount of money” was missing.

Boucher said the United States believed action would be taken against still more Colombian police officials.