A man has been arrested in connection with six shootings that happened in Queens and Brooklyn on Saturday, one of which killed an 86-year-old man, police said Sunday. 

Thomas Abreu, 25, was charged with one count of murder, two counts of attempted murder and six counts of criminal possession of a weapon in connection with three shootings that took place in Richmond Hill, the NYPD said Sunday. 

Abreu was also arrested in connection with two other shootings in Queens and one shooting in Brooklyn, police said. As of Sunday evening, he had not been charged in connection with those three incidents. 

The first shooting Abreu was charged in connection with happened around 11:30 a.m. on Saturday, police said. Officers responding to calls reporting a man shot in front of a building on Jamaica Avenue, near 109th Street, found an 86-year-old man with a gunshot wound to his back, the NYPD said. 

The man, identified by police as Hamoo Saeidi, was taken to Jamaica Hospital Medical Center, where he was pronounced dead, the department said. 

Abreu was also charged with a shooting that happened a block away from that incident, police said. 

Witnesses told police a man on a scooter randomly began firing at a group of people standing at 108th Street and Jamaica Avenue, NYPD Assistant Chief Joseph Kenny said at a news briefing Saturday. The NYPD said no one was injured in that incident.

And on Sunday, police said Abreu was charged with a shooting that happened at the intersection of Jamaica Avenue and 131st Street around 11:35 a.m. on Saturday.

According to police, a 40-year-old man was standing at the intersection when someone approached him and fired a gun in his direction before fleeing the scene. The 40-year-old man was not injured, the NYPD said. 

At a news conference Saturday evening, Kenny said Abreu was also arrested in connection with three additional shootings in Queens and Brooklyn.

Kenny said the first shooting happened at around 11:10 a.m. at the northwest corner of Arlington Avenue and Ashford Street in Cypress Hills, when a 21-year-old man was shot in the left shoulder. 

The man was taken to Brookdale Hospital Medical Center, where he was listed in stable condition, police said. 

Less than an hour later, around 11:35 a.m., a 44-year-old man was shot in the cheek at the corner of Hillside Avenue and 126th Street in Kew Gardens, Queens, Kenny said. The man was taken to Jamaica Hospital Medical Center in critical condition, police said. 

And two minutes later, a 63-year-old man was shot in his right shoulder at the intersection of 134th Street and Jamaica Avenue on the border of Kew Gardens and Richmond Hill, the NYPD said. He was taken to the same hospital in stable condition, the department said. 

In a statement released Sunday, City Hall spokesperson Fabien Levy said Mayor Eric Adams was "fully monitoring every aspect of yesterday's shootings" in coordination with acting NYPD Commissioner Edward Caban and other NYPD members.

"We are praying for the recovery of those who were injured, as well as the individual who was murdered in cold blood yesterday, but this is another example of how illegal guns have no place in our city and how we must continue to crack down on illegal scooters," Levy said.

"While shootings in our city are down by double digits this year, even a single random shooting can have a chilling effect on New Yorkers, and that is why the NYPD will continue to work around the clock to remove illegal guns from our streets to keep New Yorkers safe," he added.

Abreu’s attorney information wasn’t immediately available Sunday.