Police are desperately searching for a talented young musician who vanished more than a week ago while on a trip to New York City, as friends fear he may have suffered a “manic episode.”

Zachery Camhi, 25, disappeared on September 18th around 5 a.m. without any of his personal belongings. Camhi and a friend were driving from Allston, Mass. to New York to pick up a double bass from a competition the previous weekend.

The two were returning to the W Hotel on Lexington Avenue and East 49th Street when Camhi said he needed to use the bathroom, New York Magazine reported.

He left and never returned.

A recent Boston University grad, Camhi is said to be incredibly bright, but also suffers from bipolar disorder. His father, Scott Camhi, reported his son had disappeared before with the last episode occurring in 2013. The father told the Boston Globe, “Since ’13, it’s been on and off. He gets fidgety and says he needs to walk.”

He added, “He can take on a different personality-he’s gone by ‘Jack Camino’ in the past-and he speaks fluent Spanish and Portuguese.”

His father praised his son’s musical abilities noting how once during a competition, he “made the judges cry.”

Friends have started a Facebook page dedicated to finding Camhi. Travis Rapoza noted the dire circumstances of Camhi’s disappearance: “He is mentally unstable and needs IMMEDIATE medical attention.”

Camhi was last seen wearing a “polka dot maroon button-up shirt and dark pants,” according to missing person’s fliers. He is 5’8” and 160 pounds. Friends and family are in the city calling attention to his disappearance and doing everything they can to find the young man.