NEW YORK (WPIX) – Antipsychotic medication and a suicide note to his parents were found in the apartment of the gunman who killed multiple people in a mass shooting in Manhattan earlier this week.

New York Police Department detectives searched Shane Tamura's studio apartment in Las Vegas and found several medications, 100 9mm rounds, a tripod for the rifle used in the shooting, and an empty hand box for the revolver, police said Wednesday.

Several prescription bottles for antipsychotic, antiepileptic, and anti-inflammatory drugs were also recovered, according to an NYPD spokesperson.

Tamura, 27, also left behind a suicide note to his parents, saying in part, "I love you, mama. I'm sorry."

In the suicide notes found at the scene, Tamura mentioned a man named Rick, who was the suspect's

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