A disgruntled former customer of a Manhattan gay bar is facing the possibility of a lengthy prison sentence for allegedly targeting the establishment with an anthrax hoax.

Police arrested Ameen Keshavjee on January 6 in connection with the incident, which occurred on December 9, Spectrum News reports.

"It's called anthrax. Enjoy," read the note, discovered in an envelope filled with white powder, which was mailed to Nowhere Bar and addressed to an employee the man had been harassing for months, according to prosecutors. The substance was tested and found to be harmless.

Keshavjee is said to have sent harassing emails to the male employee starting in February. The employee reportedly warned Keshavjee at one point that if he didn't stop he would be banned from the bar. According to the New York Daily News, the 57 year-old sent an email to the employee on February 25 saying he hoped he would "die of AIDS," and calling him a "leftie, hypocrite, Democrat [voter]."

The U.S. Postal Service confirmed Keshavjee used his credit card to buy the stamp on the envelope containing fake anthrax, according to the complaint. He faces up to 10 years in prison if convicted.

The accused is currently out on bail, on conditions he not return to Nowhere Bar nor contact the employee he allegedly targeted.