PITTSBURGH -- One man is dead and another man is in critical condition following what appears to be an attempted home invasion in Pittsburgh's Homewood section, Channel 4's Kelly Frey reported.

Two masked men armed with pump-action Mossberg shotguns tried to enter a home on Hale Street around 11:20 p.m. Sunday, according to police. One of the three people inside also had a gun, and shots were exchanged.

One of the alleged invaders -- Darnell Gillcrese, 30, of the Swissvale area -- was found shot to death on the front porch. The second person fled the scene, and police do not know if he was wounded.

Jeffrey Hammond, 44, was shot four times inside the home. He was in critical condition Monday at UPMC Presbyterian.

Hammond's brother, Barry, told Frey that the situation began when they heard someone knock on the door and ask for help with a broken-down car. When they opened the door, the two men tried to come inside and started firing.

Barry Hammond said he and his brother do not know the men.

Police are still investigating.