TROY — City police have arrested two people in connection to the fatal September shooting of a 19-year-old woman.

Idelisse N. Armstead, 24, of Brooklyn, and Antwaun Twitty, 36, of Burlington, Vermont, are each charged with second-degree murder.

Beyonce Wint's body was found just before 4 a.m. Sept. 17 on Fourth Avenue, just south of 111th Street in Lansingburgh. She had been shot once in the head. The teen had lived in Manhattan and Queens but Troy police have said she had no previous ties to the Capital Region beyond spending the last few days of her life in Albany, Troy, and Burlington.

Read more: Troy homicide victim Beyonce Wint was from New York City

The day of the killing, neighbors described how the early morning stillness was rocked by what sounded like a single gun shot. Wint's body was later discovered between two parked cars by a neighbor who came out to her car to go to work.

"Troy police detectives have worked many long hours on this difficult and complex case," Deputy Chief Daniel DeWolf said in a Tuesday evening news release. City detectives were helped by federal, state and county police, as well as the New York City Police Department and Massachusetts State Police.

DeWolf declined Tuesday to describe a motive for the killing or what led police to these two suspects.

Detectives arrested Armstead in Brooklyn on Tuesday and drove her to Troy, where she is being held inside the Rensselaer County jail, DeWolf said. She will appear in Rensselaer County Court at a later date.

Also Tuesday, detectives arrested Twitty inside Logan International Airport in Boston. He is being held in Massachusetts while awaiting extradition to New York, DeWolf said. Twitty was returning from a trip to California, DeWolf said.

City police continue to investigate the homicide and ask anyone with information to call Troy police detectives at 518-270-4426.

The arrests come one day after the city saw its fourth homicide of the year: The estranged husband of a Lansingburgh woman shot his wife of over 30 years using a shotgun, and then turned the weapon on himself.

Read more: Police: Man shot estranged wife, tried to kill himself in Troy

Monday's killing brought to light a sobering statistic: Over the past two years, all nine of the killings in Troy have claimed the lives of women or children, a number that includes the slaughter two years ago of two women and two children in a Lansingburgh apartment. The statistic runs counter to national trends, which show that for the past several years men have accounted for roughly three-quarters of homicide victims in the United States.