The NYPD has arrested one man in the fatal shooting of a 19-year-old Department of Education employee on Tuesday.

Brooklyn resident Javier Oates, 19, has been charged with murder, criminal possession of a weapon and criminal use of a firearm.

Authorities say the 19-year-old substitute teacher was shot around 2:50 p.m. at the intersection of Avenue M and Utica Avenue. He remains in critical condition at Brookdale Hospital.

​Police said on Wednesday afternoon that they now have one person of interest in custody in connection to this shooting. No arrests have been made.

Parents say they received a message from the principal informing them of the crime. Families were stunned by the news.

"I'm just shocked right now. I don't know how to react,” said one parent.

New York City Schools Chancellor David Banks reacted to the incident, stating in part, “I am absolutely heartbroken and outraged that one of our dedicated employees was senselessly a victim of random gun violence. Our educators, our students, and our families deserve better than living with the threat of gun violence."

He also promised counseling services for the students at P.S. 203, along with an increased police presence around the school.

Mayor Eric Adams weighed in as well, saying, “The rivers of violence bringing guns into our communities didn​'t begin in our city, but they will end here."

Police describe the attack as intentional and targeted. However, they have yet to find a motive and are still looking for the shooter.

The suspect, who police say fled the scene in a dark-colored Sedan, was wearing a red ski mask, red sweatsuit and black jacket.