At least two men were on a small-engine plane that crashed into Utah Lake on Friday morning, the Utah County Sheriff’s Office said, but their fate has yet to be discovered.

Spokesman Sgt. Spencer Cannon told the Daily Herald that the plane was cleared to land at the Provo Airport when it went into the water just after 10 am

The National Transportation Safety Board said in an X post Friday afternoon that the plane was a Cirrus SR-22.

“We know that when the plane went down, we did have some witnesses that were in boats nearby that saw it, the plane, did hit the water pretty hard,” Sgt. Garett Dutson said in a briefing Friday afternoon.

Those witnesses called authorities to alert them of the incident.

Dutson said crews located the wreckage near the boat harbor but had not recovered the bodies of the two men as of 3 pm Friday.

A private company with a barge boat was attempting to pull the plane from the lake but it was submerged in 8.5 feet of water and mud, making efforts difficult, Dutson explained.

The rate of survival of the two men was unknown early Friday afternoon, but officials said the likelihood is low. “From what we understand with the plane, as hard as it hit the water — for survival rates, it’s not looking very good,” Dutson told reporters.

Authorities didn’t confirm how far the small aircraft had traveled, but KUTV reported the flight originated from the St. George Regional Airport.

Officials didn’t reveal the identities of the two men or say where they are from.

It’s also unknown if others were on the plane at the time of the crash.

The Utah Lake State Park was closed to visitors most of Friday while recovery operations were underway.

Several crews from the sheriff’s office and its search and rescue team, Utah State Parks, the Provo and Saratoga Springs fire departments and Utah Highway Patrol dive team assisted on the lake.

The NTSB will conduct an investigation into what caused the plane to crash into the lake.