Volunteers from Hybrid Robotics, an underwater ROV manufacturing company in Traverse City, located the body of Trenton Massey submerged in the water of the Lower Harbor north of the Shiras Dock, according to a news release from the Marquette Police Department.

Divers from the Marquette County Sheriff’s Office recovered the body, which was turned over to UP Health System-Marquette EMS and transported to UPHS-Marquette pending an autopsy.

The investigation into this incident is ongoing, the release stated.

Massey, a 21-year-old construction management student from Laingsburg in downstate Michigan, was recorded by surveillance cameras walking to the area of the Founder’s Landing Boardwalk early Feb. 22, then about 3:35 a.m. Eastern time going out onto the Lake Superior ice from the north landing pier before disappearing from camera view.

A crowd gathered at Marquette's Lower Harbor on April 16 to send flowers into the water in honor of Trenton Massey, a Northern Michigan University who had been missing since Feb. 22. The body of the 21-year-old was found Friday in Lake Superior near Marquette's Lower Harbor. (Annie Lippert/The Mining Journal, Marquette)

Massey’s cell phone was turned in about 8 a.m. Eastern time Feb. 22 after being found on the city multi-use path between UP Health System-Marquette and the McDonald’s restaurant on Washington Street, Marquette Police stated in an earlier news release.

“Contact was made with a family member who advised they would notify Massey of the found phone. At approximately 1:30 p.m. the Marquette Police Department received a report from that same family member that Massey had not been heard from and was missing,” the department stated in the release.

Marquette authorities suspended efforts to find Massey on Feb. 26 after four days of searching on land, ice, from the air and underwater, using such resources as scuba divers, sonar, aerial drones, underwater remote-operated vehicles, K-9s, hovercraft, airboat and helicopter.

In Friday’s news release, the Marquette Police Department said multiple agencies and volunteers assisted with the search from land, air, ice and water. The department thanked “everyone who helped during this difficult time.” Those included Hybrid Robotics, Antrim County Sheriff’s Office, Marquette County Sheriff’s Office, Northern Michigan University Police Department, UPHS-Marquette EMS, Marquette City Fire Department, Michigan State Police K-9s and Marine Services Team, U.S. Coast Guard Station Marquette, U.S. Army, Michigan Department of Natural Resources Conservation Officers, Alger County Sheriff’s Office, No One Left Behind K-9 Search and Rescue, Northern Michigan University, Frontline Strong and numerous volunteers from the community.

A memorial for Massey took place April 16 in Marquette. The NMU Wildcat flag on campus was lowered to half-staff, with an afternoon service at the Jacobetti Complex and a flower-throwing tribute that evening at Lower Harbor.

“I just want to say thank you for the last two months, the last four years, the last 21-and-a-half years,” Sarah Brock, Massey’s mother, said at the flower-throwing tribute. “Everybody touched Trenton’s life.”

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Annie Lippert of The Mining Journal in Marquette contributed to this report.