The prosecutor in the Karen Read case said Tuesday that the federal investigation into John O'Keefe's death is over.

"There is no longer any federal investigation of John O’Keefe’s death or any related matters," special prosecutor Hank Brennan said. "It is closed. It is over.”

A federal investigation into the handling of John O’Keefe’s death no longer casts a shadow over the local case of accused murderer Karen Read, the prosecution confirmed. “There is no longer any federal investigation into the investigation of John O’Keefe’s death or any related matter,