A desperate search continues for 25-year-old Boston University grad student Zachary Camhi who went missing on Sept. 18 in New York City.

Zac is said to be an award-winning classical musician who speaks English, Spanish and Portuguese.

He suffers from bipolar disorder and needs medication, which — along with his phone and his wallet — he did not have with him when he vanished.

“If you met Zac on the street, you would find him to be the friendliest, most charming, kind individual you have ever met,”  his friend Travis Rapoza wrote in a Facebook post about Zac’s disappearance.  

His last confirmed sighting was around 5 a.m. that Sunday, leaving East Side W. Hotel near East 49th Street and Lexington Avenue. A missing person poster has circulated that says he might have been spotted between noon and 1 p.m. on Sept. 22 at Bryant Park. He was wearing a maroon button-down shirt and dark slacks, which he is wearing in the photos on his missing person poster.

“Zac is not your typical person in any sense: he is a prodigiously talented double-bassist and he studies with the principal bassist of the Boston Symphony Orchestra,” Rapoza said.

Rapoza tells Metro that a small search committee of friends combed Midtown Manhattan on Sunday and that several homeless individuals were “adamant” that they saw him near Bryant Park, Penn Station and Lincoln Center.

He might have been seen at Lincoln Center on the day he went missing wearing hospital clothes, which might mean he checked himself in and out of a facility. However, because he is not taking his medication he might be making unreasonable decisions, Rapoza said.

Anyone with information about Zac can confidentially report it using the NYPD’s Crime Stoppers website or by anonymously calling the Crime Stoppers Hotline at 1-800-577-TIPS (8477). Tips can also be text messaged to the NYPD by texting 274637 (CRIMES), then entering TIP577.