The Cumberland City Police are investigating an armed, home-invasion robbery that took place early this morning in the 400-block of Arch Street. The two victims said three men force their way into the home, demanded money, and stole some items before fleeing. The suspects disguised their identities by wearing masks. Despite a search which included a tracking K-9, no suspects were found. The Maryland State Police Crime Scene Unit was also on the scene to collect evidence. Anyone with information is asked to contact Cumberland City Police or the Allegany-Mineral County Crimesolvers Unit.