Investigators in Polk County, Iowa say they're hoping new technology will help them identify a man whose body was found 26 years ago.

Polk County officials say they're hoping the National Missing and Unidentified Person Systems will be able to help identify the tattooed man who detectives have nicknamed "Bones." The system was started in January 2009 and already has helped identify 15 people.

Polk County medical examiner Gregory Schmunk says the new system can combine missing persons databases with unidentified remains databases. He says his office has two other cases registered with the system.

National federal statistics show that medical examiners and coroners nationwide had 4,400 unidentified bodies in 2007.