An 18-year-old from Baldwin is officially in police custody, accused of shooting into a crowd of college students who gathered for a house party in Hempstead a week and a half ago.

Nassau County police announced the arrest of Jacob Mcmillan, 18, and charged him with second-degree murder, second-degree attempted murder, two counts of criminal possession of a weapon and second-degree burglary from a separate incident back in September.

Nassau police said Mcmillan arrived at the party around 11 p.m. on Saturday, Nov. 22 with several friends and got into a verbal altercation with the party's host. Investigators said the host wanted to ensure no one brought a weapon inside the home.

"The suspect backs away from a group of people and begins to shoot a handgun," Nassau County Police Det. Lt. George Darienzo said. "Three shots are fired in total. Three people are struck with bullets. One fatal."

Police initially responded to 131 Willow Ave. after a ShotSpotter notification went off.

First responders found three people with gunshot wounds at the scene.

Two of them were 20-year-old students from Nassau Community College. The unnamed victims were taken to the hospital, where they were treated and released.

A third victim, Amira McCleod, 19, died at the scene.

McCleod was a sophomore at Monroe University in The Bronx and was from Queens. She was a member of the women's college basketball program and was studying business, according to her biography on the school's athletics website. She had dreams of opening up her own clothing and sneaker store.

The day after her death, the school released a statement that said in part: "The Monroe University community is devastated by the tragic loss of student Amira McCleod, a cherished member of our Express women’s basketball team. We extend our deepest and most heartfelt condolences to Amira’s family, friends, and all who knew and loved her."

Jerry Kornbluth, vice president of community and governmental relations at Nassau Community College, also released a statement that said in part: " Our thoughts are with all those affected by this senseless act of violence."

People who live in the neighborhood where the shooting took place said parties were common at the home.

"I asked my neighbor, he said, 'Oh, they were having parties here Friday, Saturday, Sunday,'" one resident said.

Nassau police said about two dozen people were at the party at a rental home. The invitation to attend was circulated on social media, investigators said.

Police said it's unclear if anyone invited Mcmillan to the party or if he showed up on his own. Investigators said Mcmillan did not know the victims and that there's no evidence of gang violence.

Police said the Nassau County District Attorney's Office is reviewing the case and that more arrests could still happen.

Mcmillian is expected to face a judge for his arraignment later today.