It was a grim discovery Friday afternoon in Massillon, where possible human remains were found behind a home on 8th Street SW.

“We’ve uncovered what we believe is a clandestine grave in this backyard,” Stark County Coroner Dr. Anthony Bertin said.

Bertin said they found a small plastic container on wheels about six feet underground. It was about 3 ½ by 2 ½ feet big and believed to contain the remains of an adult.

“It’s very heavy. We believe that it may contain some concrete, he said. “We believe that it’s probably been there about a year.”

He would not reveal the possible gender of the victim.

Neighbors said it was not uncommon to hear saws at the home, where former residents allegedly claimed to work in three services.

Last week, neighbors say they witnessed their arrests and young children were taken away.

“Those people rented, I know that,” said Kelley Garlando, who moved into the neighborhood in late 2016. “They just weren’t real good neighbors, you know, we didn’t associate with them much.”

“They would party for over 24 hours at a time down there and they had a lot of bonfires. They had a woodchipper there at one time,” she said.

Late Friday afternoon, the state’s crime lab transported the box to the morgue where it will be opened and the contents photographed.

Investigators are not revealing the identity of the person who tipped them off to the discovery and say they have a pretty good idea of who the victim may be.

WATCH: Dr. Anthony Bertin held a press conference on Friday afternoon which we captured on WKYC's Facebook Live.