Philadelphia police on Monday were searching for the people who fatally shot two men and the person who stabbed another in three separate homicides over the weekend.

About 2:30 p.m. Sunday, medics with the Fire Department responded to a report of a "hospital case" on the 6000 block of North American Street in Olney, police said Monday.

In the rear driveway of a home, they found an unresponsive man bleeding from his left shoulder. They took the victim to Einstein Medical Center, where it was determined that he had been shot.

Police identified the victim as Kyle Arroyo, 23, of the 5900 block of Ella Street in Olney. Arroyo died from his injuries about 3:30 p.m. Sunday, police said.

In an earlier shooting about 2:20 a.m. Sunday, police responded to a report of a "person with a gun" on the 200 block of East Allegheny Avenue in Kensington. Police found a man lying outside with a gunshot wound to his chest and took him to Temple University Hospital, where he was pronounced dead at 2:45 a.m.

Police on Monday identified the victim as Raymond Pantoja, 26, from the 200 block of Wellens Street in Olney.

Police said that the initial investigation revealed there may have been some type of altercation between the victim and other people inside and outside a lounge and bar on the 200 block of East Allegheny Avenue shortly before the shooting.

Police on Monday also identified the victim of a fatal stabbing in West Oak Lane.

Mutadi Muhammad, 35, was found dead in the basement of a home on the 6400 block of Limekiln Pike at about 1:40 a.m. Saturday.

Officers responding to a report of a person with a weapon were directed to the basement apartment, where they found the victim on the floor, police said.

Police said Monday that Muhammad lived in the home where he was found.

The home's owner, however, told police on Saturday that he rents out the home and said the victim was not his tenant.

Muhammad was found unresponsive with multiple stab wounds to his chest. He was pronounced dead at the scene by medics at 1:55 a.m. Saturday.

No arrests have been made in any of the cases. Anyone with information about any of these slayings is asked to contact the Homicide Division at 215-686-3334. As with all homicides, there is a $20,000 reward for information leading to an arrest and conviction in each slaying.