WASHINGTON (AP) — Eight months, 126 formal interviews and a 23-page report later, the Supreme Court said it has failed to discover who leaked a draft of the court's opinion overturning abortion rights.

The report released by the court Thursday is the apparent culmination of an investigation ordered by Chief Justice John Roberts a day after the May leak of the draft to Politico. On Friday, in response to questions, the head of the investigation added in a statement that the court's nine justices had been interviewed as part of the probe and that nothing implicated them.

The leak touched off pro...