PUEBLO, COLO. -- Pueblo County Sheriff's Office asks for the public's help to find Matthew Adam Barnes, 20, who has two warrants out of El Paso County for failure to fegister as a sex offender.  He is also a person of interest in the Dec. 10 homicide of Robert Piserchio that occurred in Pueblo County. 

Barnes, who is also known as Matthew Green, is a white male, 5 feet 10 inches tall, brown hair and blue eyes. He is known to have driven a silver Saturn with Colorado license plate 757JVG in the past, and may reside in El Paso County.

Charlene Graham stated, “There is a possibility he  may have some information and we would like to talk to him," said Charlene Graham, bureau chief in Pueblo.

No arrests have been made at this time and detectives are continuing their investigation.

Anyone with information on the whereabouts of Barnes is asked to contact the Pueblo County Sheriff’s Office  (719) 583-6250 or Crime  Stoppers at (719) 542-STOP (7867).