Two men were shot to death in Philadelphia over the weekend in separate cases, while eight others were wounded in a string of shootings in yet another violent weekend in the city.

The shootings began Friday afternoon when a 23-year-old man was found dead with two gunshot wounds to the head inside a home on the 2200 block of East Washington Lane in East Mount Airy, police said. The victim’s uncle found the man unresponsive and lying on a couch.

On Saturday evening, a 60-year-old man was shot multiple times in the chest and died on the 3000 block of North Bambrey Street in North Philadelphia, according to police.

No arrests were made in either case, and both killings are under investigation, a spokesperson confirmed Sunday afternoon. The police are offering a $20,000 reward for information that leads to an arrest and a conviction.

Five other non-fatal shootings started Friday evening and continued on Sunday.

In the first of those, three young men, ages 17, 19, and 24, were critically injured on the 800 block of North 41st Street in West Philadelphia’s Belmont neighborhood about 8 p.m. Friday. Police said all three men were taken to Penn Presbyterian Medical Center.

In another case, two 20-year-old men were wounded on the 2400 block of North Patton Street in Strawberry Mansion early Sunday, police said. One victim was shot in the stomach and listed in critical condition, and the other man was shot in his left hand, according to police reports. Both were taken to Temple University Hospital. In that case, police said they found two guns and took two people into custody who had not been charged as of Sunday evening.

About a mile south of that shooting, a 40-year-old man was shot overnight Sunday on the 3100 block of Clifford Street in Strawberry Mansion, police said Sunday. He was listed in stable condition after being wounded twice: in his right knee and in his left calf. No one had yet been arrested, police said.

Another shooting, on the 2500 block of West Harold Street in Strawberry Mansion about 12:30 p.m. Sunday, wounded a 22-year-old woman in her stomach, police said. The woman was in critical condition at Temple University Hospital. Authorities had not recovered a weapon or made an arrest.

And a 26-year-old man was shot in the right knee and upper left torso shortly after 3:30 p.m. Sunday on the 900 block of 43rd Street in Belmont. He was taken to Presbyterian Hospital and listed in stable condition. Police had made no arrest and found no weapon.

Also early Sunday, police said, a 54-year-old man was stabbed in the chest during a robbery attempt near the 2900 block of Rorer Street in Kensington. He was taken to Temple University Hospital, and was in stable condition. No arrest was made in that case, either, police said.

And a 35-year-old man was stabbed in the chest on the 3300 block of Krail Street in East Falls on Sunday night. He was taken to Einstein Hospital and was listed in critical condition. No arrests were made.