56-year-old E P Ganesan, a government school laboratory assistant, was found dead at his residence in October, with the family reporting a fatal snake bite.
Nick had been staying at a high-end Los Angeles rehab facility that specializes in substance abuse treatment, which reportedly costs around $70,000 a month.
John's crucial tip surfaced after he began posting on Reddit, saying he recognized the suspect shown in the images released by authorities following Saturday's deadly shooting.
The police reiterated their commitment to carrying out a thorough and professional investigation and called for patience and understanding from all parties involved.
The offence of criminal breach of trust under Section 406 of the Penal Code carries a maximum punishment of up to seven years' imprisonment, a fine, or both.
The cases primarily involved e-commerce scams, friend impersonation scams, job scams, government official impersonation scams, investment scams and rental scams.