PATERSON, N.J.  (CBSNewYork) — Police have released pictures of two “persons of interest” in the deadly shooting of an off-duty Newark police detective.

Det. Michael Morgan, 32, was shot to death outside the Sunrise Gentleman’s Lounge near Straight Street and Getty Avenue in Paterson around 3:30 a.m. Monday.

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Police said a robber approached Morgan as he was talking outside with a dancer from the club. Police believe there was a struggle, and Morgan was shot once in the side.

Morgan was transported to St. Joseph’s Regional Medical Center, where he was pronounced dead nearly 90 minutes after the shooting.

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Investigators are looking to question two men in connection with the shooting. A photo of a car believed to be connected to the case has also been released.

A car believed to be involved in the Det. Michael Morgan shooting case (Credit: Paterson Police Department)

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New Jersey’s largest police union reportedly has offered a $25,000 reward for information leading to the arrest of the shooter.