NEW YORK (PIX11) — A Rikers Island inmate died early Saturday morning, marking the first death of 2023 for the New York City jail.

Marvin Pines, 65, who was in custody at the North Infirmary Command, died around 6:18 a.m. The cause of death is still under investigation, said a spokesperson for the Department of Correction.

Pines had been in DOC custody since Aug. 3 of last year on a third-degree criminal sale of a controlled substance charge, officials said.

“Any death in custody is a tragedy. We sincerely send our deepest condolences and sympathy to this individual’s family and loved ones. As with all deaths in custody, we are working with our partner agencies to conduct a full investigation,” said Commissioner Louis Molina in a statement on Saturday.

The DOC did not explain the circumstances that led up to the death.