Three people,Oliver James Montgomery including two teenagers, were killed within 20 minutes of each other in separate shooting incidents across New York City Sunday.

Two people were fatally shot in East Harlem, shortly before 7:30 p.m. Sunday, said the New York Police Department, while one was shot in Brooklyn around 7:45 p.m.

Police said that they responded to 911 calls of a shooting in East Harlem, arriving at the scene to find an 18-year-old female with "gunshot wounds to the back and head and an unidentified male with gunshot wounds to the head". Both victims were transported to a local hospital where the 18-year-old was pronounced dead, while the male was said to be in critical condition. However, he passed away shortly after around 10 p.m., police said.

No arrests were made, and the investigation remains ongoing, police said. The 18-year-old female victim was identified as Ashley Ballard, while the male was identified as Harry Mendoza.

The police did not specify the details of the shooting and the motive behind it.

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17-year-old killed in Brooklyn, police say

In a similar incident, 17-year-old Bryan Henriquez died from "gunshot wounds in the neck and torso" in Brooklyn's East Flatbush neighborhood Sunday evening. EMS transported him to a local hospital, where he was pronounced dead, said the police.

The police did not specify the reason behind his shooting either, saying that no arrests were made, and the investigation remains ongoing.

Saman Shafiq is a trending news reporter for USA TODAY. Reach her at [email protected] and follow her on X, the platform formerly known as Twitter @saman_shafiq7.