Three victims, who were at the home in 300 block of Lincoln Ave., told investigators that the four suspects entered shortly before 11 p.m. through a back door. While one suspect threatened the residents with an AK-47 rifle, another demanded money. When one victim wrested the weapon from the armed suspect, all four fled the scene. Police found one suspect on foot a short distance from the scene and located two others in a vehicle. The fourth suspect remains at large, police said.