The skeletal remains found at a home construction site in southeastern Michigan are those of a 22-year-old woman who went missing last fall after attending a Halloween party, a medical examiner's spokesman said Saturday.

Ryan Bridges with the medical examiner's office in Wayne County told The Associated Press that dental records identified the remains as being Chelsea Bruck's.

Bruck, of Maybee, disappeared after attending the party in Newport, southwest of Detroit and about 15 miles away from where her body was discovered Friday in Monroe County's Ash Township.

She was dressed as the fictional comic villain Poison Ivy at the party and was wearing a leaf-covered top and a dark purple wig. Her body wasn't clothed when workers found it while trying to free a dump truck from the soggy soil.

Monroe County Sheriff Dale Malone said evidence collected at the scene where the body was found indicated that Bruck's death was a homicide, although a cause of death has not been determined, The Monroe News reported.

Evidence also was found on Bruck's Halloween costume, which was discovered earlier this month at an industrial site about 10 miles from where the body was located, the newspaper reported.

Malone would not go into detail about the evidence. No arrests have been made.

"Our thoughts and prayers are with the Bruck family," the sheriff said at news conference Saturday night.

He said Bruck "in all likelihood" was killed at or near where the body was found.

Investigators and volunteers had been searching for Bruck since she went missing Oct. 26. A witness told police about seeing Bruck in her costume around 3 a.m. that day, walking in the direction of where cars were parked. A man was with her.