A spate of weekend slayings across Philadelphia left five people dead, and police on Monday publicly identified the victims.

In the most recent homicide, police were called to Hortter Street near Mansfield Avenue in East Mount Airy's Stenton section at 11:22 p.m. for a person with a gun. When they arrived, police said, officers found 23-year-old Yohannon Shemuel Alexander dead of several gunshot wounds to the chest in the driver's seat of a black Ford Focus. Alexander, who lived on 8th Street near Spencer in Olney, was pronounced dead at the scene at 11:32 p.m.

Police said on Monday they do not know who shot Alexander or why.

Earlier Sunday, about 3 p.m., police found 69-year-old James Williams, of 57th Street near Berks in Overbrook, dead of blunt-force head trauma at a Southwest Philadelphia Locker Room Storage on 62nd Street near Glenmore Avenue, where he worked. Williams was found by a coworker inside a van at the storage facility, police said, and his hands and legs were bound behind his back. There is no motive or suspect in his killing so far, according to police.

On Sunday morning, police said, James Debrady, 54, was stabbed to death on the next block over from the North Philadelphia block where he lived. Responding officers found Debrady just before 9:30 a.m. on Dakota Street near 25th with a stab wound to the chest. He died at Temple University Hospital a short time after he was found. Police have not revealed any information on a motive or suspect in his killing.

Joseph McKinnon was the man whose Nissan Murano crashed on a block in Point Breeze Friday evening after he was shot several times, police said. In that shooting, police were called to Cleveland Street near Tasker for a person with a gun at 5:49 p.m. and found McKinnon, 45, bleeding from his wounds and slumped behind the wheel of the SUV, which struck a house on the block. McKinnon was taken to the Hospital of the University of Pennsylvania, where he was pronounced dead at 6:06 p.m. No motive or suspect has been released in the shooting.

Police said they are not yet releasing the identity of a man who was found dead of possible gunshot and stab wounds inside a car on Saturday on Sydenham Street near York. His killing remains under investigation.