Federal agents in Anchorage last week arrested a former Chicago-area Buddhist priest on a sexual assault charge from years earlier, when he allegedly impregnated an underage girl, police say.

The agents caught Camnong Bual Ubol at Ted Stevens Anchorage International Airport on May 11. Ubol worked as a dishwasher for LSG Sky Chef, an FBI spokesman said.

Ubol, 61, was formerly a Buddhist priest at the Dhammaram Temple in Stickney Township, Ill., according to the Cook Country Sheriff's Office. As a priest at the temple, Ubol allegedly had sex with a 15-year-old girl, the sheriff's office said in a written statement. The teenager gave birth to a child afterward and a paternity test in 2010 confirmed the baby was Ubol's, the sheriff's office said.

But Ubol moved on and authorities never heard about the pregnancy or paternity test.

The Survivors Network of those Abused by Priests asked police in 2011 to investigate the sexual assault, which sheriff's deputies verified. Ubol had since left Illinois and a source at the Chicago-area temple pointed police to a temple in Long Beach, Calif., the sheriff's office said. The California temple, in turn, told the investigators to check in Alaska.

Carrying an arrest warrant from Illinois, an FBI agent, an air marshal and an Airport Police Department officer slapped handcuffs on Ubol at the airport at about 7 p.m. May 11 and hauled him to the Anchorage jail.

Born in Thailand, Ubol is a U.S. citizen and was a Buddhist priest in the U.S. starting in about 1995, the Cook County Sheriff's Office said.

Reach Casey Grove at casey.grove@adn.com or 257-4589.