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A man suspected of killing his ex-girlfriend last month in Parkman can been seen in a photo taken by a home monitoring system.

Robert Burton was spotted Monday by a man who owns a camp on Point Road in Guilford. State Police on Friday released a photo of the suspect that was captured by the monitoring system of a nearby home.

Police also released photos of two tattoos on the back of Burton's hands. The tattoo on one hand is a shamrock. The tattoo on the other hand says "outlaw."

Police have been searching for Burton since Stephanie Gebo was found dead in her Parkman home on June 5.

Area residents have been urged to lock their homes and vehicles, and not approach the suspect. Anyone who spots Burton should call 911 or State Police in Bangor at 973-3700.