John Rosario was 37 when he was shot dead inside a vacant apartment at a multifamily building at 300 Hill Street in Waterbury, Connecticut. On the evening of March 19, 2023, police responding at about 8:45 p.m. found Rosario with multiple gunshot wounds to his neck, chest, and stomach; he was pronounced dead at the scene. Loved ones described him as a hardworking father and mechanic, known for a sarcastic sense of humor and an outgoing, helpful nature.

Investigators say two men wearing face coverings and armed with assault-style rifles approached the rear of the residence just before the shooting. In April 2023 Waterbury police arrested 38-year-old Jose Cintron and charged him with murder, conspiracy to commit murder, and weapons offenses; bond was set at $2 million. In July 2023 authorities arrested 37-year-old Juan Carlos Lopez-Fontanez and charged him with murder and conspiracy to commit murder; his bond was set at $3 million. A third man, Solomon Lopez-Mejia, was later charged as the alleged driver. Prosecutors contend Cintron was motivated by anger over a relationship Rosario was having with Cintron’s sister.

If anyone knew John Rosario, his routines, or has information about the shooting, please come forward.