Notre Dame cornerback Bob Satterfield, who died suddenly, suffered a seizure and cardiac arrest, but no precise cause of death has been established, says a university spokesman.

Autopsy test results showed no alcohol or drugs in Satterfield's blood at the time of his death Thursday, said Notre Dame sports information director John Heisler.Satterfield, 22, of Los Angeles, died at 3 a.m. in Pawating Hospital in Niles, Mich., less than an hour after he collapsed at a Niles nightclub.

His death occurred a few hours after Satterfield and his national championship teammates had returned from Washington, where they met President Reagan.

Notre Dame physician James M. Moriarity, who attended the autopsy, reported doctors haven't determined what caused the seizure, Heisler said.