A teenage U.S. citizen who acknowledged being a drug-cartel killer has finished his three year juvenile-offender term for homicide, kidnapping and drug and weapons possession.

The interior secretary of southern Morelos state says the teen has been released and taken to an airport to be sent to the United States, where he has family.

Jorge Messeguer told Milenio television Tuesday that Edgar Jimenez Lugo would apparently go to some sort of support facility in San Antonio, Texas.

However, it does not appear that Jimenez faces any charges in the United States.

In 2011 at the age of 14, Jimenez confessed to killing four people whose beheaded bodies were found suspended from a bridge.

He was born in San Diego, California, but was raised in Mexico by his grandmother.