Keyontae Johnson, a basketball star in a medically induced coma after collapsing during a game

Keyontae Johnson, a men’s basketball player from Florida, is in a medically induced coma after collapsing during a weekend game.

During a game on Saturday between the Gators and Florida State, Johnson, 21, collapsed and was carried off the court on a stretcher and transported to Tallahassee Memorial Hospital.

Larry DeJarnett, his grandfather, told USA Today that Johnson has been transported to Gainesville to continue his care since then and was put in a coma on Monday.

“He may have had brain activity, so the coma was induced,” DeJarnett said. “To keep him sedated, they put him on medication.”

When he was transported to Tallahassee Memorial Hospital, Johnson, 21, who was named the SEC’s preseason player of the year was initially identified as being in critical but stable condition.

With a diagnosis or prognosis yet to be given, it is unknown what caused Johnson’s collapse.