An Oceanside gym owner who pleaded guilty in February to using members' credit card information to make nearly $18,000 in purchases from Home Depot was sentenced Friday to 3 years in prison, prosecutors said.

Thomas Donovan, 39, owner of 5 Star Kickboxing, also was sentenced to 3 years' post-release supervision, according to Madeline Singas, the acting Nassau County district attorney.

Acting Nassau Supreme Court Justice Jerald Carter also ordered Donovan to repay $17,719.27 to Home Depot and $690.50 to an Oceanside scrap metal recycler, where prosecutors said he sold wires as scrap after stealing them from Home Depot.

PhotosRecent LI mug shotsDataLI crime stats

Donovan pleaded guilty Feb. 24 to charges of third-degree grand larceny and second-degree attempted possession of a weapon after a loaded gun was found in his Island Park home, prosecutors said.

At the time his attorney, Michael DerGarabedian of Rockville Centre, said his client "took responsibility for what he did."

Between Nov. 17 and Dec. 9 last year, Donovan committed fraud by taking credit card information of people who signed up for fitness classes at his gym, once known as KOXO Kickboxing, and using it without permission, prosecutors said.

advertisement | advertise on newsday

Under the scam, a second person would visit Home Depot stores across Long Island and supply the name and phone of a fictitious contractor for the Pro Desk cashier to contact for payment, prosecutors said.

Donovan would answer the calls and pose as the contractor to confirm purchases by supplying credit card numbers, security codes and expiration dates, authorities said.

It was not immediately known whether the second person has been charged.

With eight search warrants, police and district attorney investigators went through Donovan's home, business and vehicles, and found a loaded .25 caliber pistol with defaced serial numbers as well as thousands of dollars of Home Depot merchandise, officials said. Donovan was arrested Dec. 9 at his Island Park home.