Updated

Egypt's Prosecutor General's office says it is launching an investigation into a recording allegedly depicting a debate among senior military and security officials over forging trial evidence against ousted Islamist President Mohammed Morsi.

The recording, posted late Thursday on an Islamist-allied satellite channel, allegedly dates back to the period immediately after Morsi's ouster when he was held in a military facility before being formally charged with multiple crimes under the civilian court system. It allegedly depicts a senior military legal adviser consulting with other officials, including Interior Minister Mohammed Ibrahim, on how to build a strong case against Morsi. He recommends retroactively reclassifying the military facility as a civilian site so that Morsi's lawyers couldn't challenge the legality of his detention.

The prosecutor's office called the recording "fabricated."