A Montenegrin man who overstayed his US visa is accused of running an illegal dentist's office out of the basement of his Michigan home using equipment he bought off eBay from China.

Leka Gjokaj, 55, of Clinton Township, was arraigned on Friday on the charge of health professional operating without a license, a felony with a potential four-year prison sentence, according to the Detroit Free Press.

Authorities say that Gjokaj did not have a license to perform dental procedures for money from his home, and that while he had traveled to the U.S. legally on a valid visa, the visa expired in 2015.

Gjokaj mostly performed minor dental work such as cleaning teeth and filling cavities, rather than serious oral surgery, according to investigators, taking referrals from his church.

Leka Gjokaj was arraigned Friday in Clinton Township, Michigan, on charges of operating without a dental license

Gjokaj's basement featured equipment typical of a dentist's office including a dentist chair, X-ray machine and molds for teeth

Police Detective Jay Anderson, remarking on the lack of cleanliness in the office, said 'it was bad' with authorities finding a glass containing dentures and 'dirty, bloody knives.'

The equipment found in the basement facility, including a dentist chair, molds for teeth and an X-ray machine, was purchased on eBay and from China, according to Macomb County Prosecutor Eric Smith.

Smith admonished Gjokaj saying the unlicensed dentist, who claims to have studied at dental school in Albania, was 'preying on patients' dental needs.

Gjokaj's attorney, Paul Lulgjuraj, says his client, originally from Montenegro, has a doctorate in dental science, and denies that he is just some 'monster off the street.'

Investigators found dentures sitting in a jar after serving a search warrant on Gjokaj's basement facility

Various molds of teeth found in Gjokaj's dental practice run out of his home's basement

The Macomb County Prosecutor said the equipment found in Gjokaj's basement office was purchased from eBay or from China

The attorney said his client, who is married with three children, has not been notified about an extension on his visa yet, and that Gjokaj has prior criminal record.

He is currently in county jail on an immigration hold.

Gjokaj's wife who also worked with him was not arrested, but investigators say she is currently in the U.S. illegally as well.

Gjokaj's family initially brought him to the U.S., but his first job did not pan out, according to Capt. Richard Maierle of the Clinton Township Police Department.

The dentist office equipment being removed from Leka Gjokaj's home in Clinton Township, Michigan

Maierle also said that Gjokaj had been to Albanian dental school, and may have begun his unlicensed practice about six to 12 months ago.

Lulgjuraj said his client is a 'doctor' from Montenegro who has been practicing for 30 years.

'So for somebody to say there's a person practicing in a basement, it's an unfair characterization,' he said defending his client.