A former camp counselor was sentenced Tuesday to 25 years in prison for sexually abusing a young boy on Long Island and taking dirty pictures of several others.

David Greenberg — a former counselor at Camp Kenwall in Melville who is already behind bars for similar crimes in North Carolina — will now likely spend the rest of his life locked up on account of his new sentence.

The mother of the boy he abused described the 37-year-old as a “monster” during the court proceedings.

“This is something that will be a part of his life forever,” she said, according to WCBS.

“Never in a million years would I have thought this monster was in him,” the woman added, in reference to Greenberg.

Prosecutors said the victim, now 13-years-old, was abused from the time he was six until he was 12. He also took sexually explicit photos of boys while he was employed at Camp Kenwall.

Greenberg is currently serving a 35-year sentence in North Carolina, CBS reports.

The nature of his crimes there is unclear, but said to be similar.