Updated

An off-duty New Jersey cop was shot and killed Sunday night inside a home, officials said -- though many other details surrounding the rookie officer's death remained unclear.

The 33-year-old, who had only been on the force for about a year, suffered a gunshot wound to the chest around 7:50 p.m., NJ.com reported.

Police responding to the scene found the unidentified officer had been shot, and he was later pronounced dead at Jersey City Medical Center.

City spokesperson Kimberly Wallace-Scalcione said the officer had been working for the Jersey City Police Department for about a year and had recently graduated from the police academy, according to NorthJersey.com.

The Hudson County Prosecutor’s Office said it was investigating the shooting, however, no suspect was immediately named.

The Associated Press contributed to this report.