Thirteen people were shot during a bloody Sunday in New York City — including seven struck at a Brooklyn Sweet 16, authorities said.

Gunfire broke out around 11:15 p.m. at a building on Albany Avenue near Fulton Street in Bedford-Stuyvesant, wounding seven victims ranging in age from 14 to 20, police said.

The oldest victim, who was taken to Woodhull Medical Center by private means, died of her injuries more than an hour after the incident. The others were variously treated for injuries.

No arrests had been made in connection to either incident by later in the morning, according to authorities.

In total, seven shootings were reported across the city on Sunday, cops said.

In another evening incident, a 17-year-old boy was shot in the neck outside 315 Livonia Avenue at about 9:45 p.m. in Brownsville, police said.

Two suspects are in custody in connection to that shooting, cops said.

Hours earlier, a 30-year-old man was shot once in the right leg by someone in a four-door white sedan that drove past him on Greene Avenue near Malcolm X Boulevard in Stuyvesant Heights around 5:40 p.m., cops said.

He was taken to the Kings County Hospital Center with non-life-threatening injuries.

Around 1:20 p.m., a 40-year-old man was blasted three times in the stomach when he refused to hand over his property and a struggle ensued during an attempted robbery at Glenmore and Georgia avenues in Brownsville, cops said.

Suspect Dante Bailey, 23, was taken into custody, police said. A firearm was recovered.

Sunday’s other shootings occurred early in the day in Brooklyn and the Bronx.

On Sunday’s date in 2019, which was a Friday, no one was shot.

Six people were shot in as many incidents on Saturday, police said.

On that day last year, two people were shot in as many incidents.