Newcastle United have suspended reserve team manager Willie Donachie for allegedly striking a player.
The Magpies have launched an investigation into an incident after the Under-21 team's 2-0 defeat at Sunderland on Monday evening.
It is understood that Donachie's conduct is being probed after it was claimed he was involved in an altercation with 19-year-old defender Remie Streete.
Former Scotland international Donachie, 62, has been at St James' Park since 2009 and has held various roles in the academy.
Newcastle's loss in the second-string derby came two days after the senior team were beaten 3-0 at home in the Premier League by Sunderland.
The first team's next Premier League game is the trip to Stamford Bridge to face Chelsea on Saturday.