Officers responded to a call of multiple shots fired at an apartment complex on Coppola Drive in South Plainfield at around 9 a.m. on Monday.
Investigators said a man and a woman were pronounced dead at the scene. A second man later died at the hospital.
Om Brahm-Bhatt, 23, is facing several charges, including three counts of first-degree murder.
Police have not yet released a possible motive, but they do not believe it was a random crime.
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