The U.S. Federal Bureau of Investigation (FBI) in Chicago has arrested a U.S. and U.K. citizen wanted for allegedly kidnapping and murdering a U.S. citizen in Costa Rica.

Matthew Francis Nolan, 40, was arrested Thursday as he left a bankruptcy court hearing, according to the Web site www.chicagobreakingnews.com. He is charged in Costa Rica with March 2005 kidnapping and slaying of Robert C. Cohen.

Nolan and an accomplice are believed to have kidnapped Cohen and held him for ransom. When the demands were not met, the FBI said, Cohen was killed. His body was found underneath a bridge over the Chirripó River in Costa Rica's Caribbean province of Limón.

The Chicago media Web site reported Nolan was being held at Chicago's Metropolitan Correction Center pending the completion of extradition proceedings.