A 16-year-old girl was shot in the leg Sunday afternoon when someone fired into a crowd during a fight on Broad Street, police said, adding to a list of violent episodes in the city over the weekend.

The shooting happened around 1 p.m. on the 6500 block of North Broad Street, when police said two women surrounded by a crowd were fighting and someone sprayed mace in the air. That caused the boyfriend of one of the women in the fight to fire a shot, police said, and the bullet struck the teen in the left thigh.

She was taken to Einstein Medical Center in stable condition. Authorities said no one was arrested, and no weapon was recovered.

In other incidents Saturday night and Sunday morning, police said two people were slain in homicides: A 67-year-old man was fatally stabbed in Frankford, and a 21-year-old man was fatally shot in the head at a Port Richmond intersection where as many as 1,000 people had gathered on ATVs and dirt bikes.

Police said investigators believe the older victim, whom they did not identify, was chased in and out of his apartment on the 5200 block of Cottage Street just before midnight by a man seen putting a knife beneath a dryer in the laundry room. When detectives knocked on the door of someone matching the suspect’s description, police said, the man who opened the door had blood on his hands. He was taken into custody to be questioned, police said.

In the shooting of the younger man, officers responded to the 3800 block of Aramingo Avenue around 11:24 p.m., where a crowd of hundreds had gathered over several blocks “to view illegal car racing,” police said. Officers found the victim — who had been riding a green motorcycle — suffering from several gunshot wounds to the head. He was pronounced dead at the scene.

The green motorcycle was no longer there, according to police.

No arrests were made. Investigators believe the shooter drove away on a dirt bike, police said.

In separate incidents, three other men were left in critical condition, police said: A 35-year-old was stabbed several times in Hunting Park, a 22-year-old man was shot in the eye in Kensington, and a 28-year-old was shot three times in West Philadelphia.

Meanwhile, just after 4 a.m. Sunday, a 30-year-old woman was killed when someone driving a black Dodge Durango hit her on the 4100 block of North Broad Street, authorities said. Police did not identify the victim. They said the driver — whom they did not identify — remained on the scene and was not arrested.

The incidents marked a continuation of an ongoing surge in violence in the city. According to police, 238 people had been killed in homicides through Saturday, a 32% increase over last year’s pace and the highest year-to-date total since at least 2007.

More than 900 people have been shot in the city this year, police statistics show, a 21% increase compared to the same date last year.