League One club Tranmere Rovers on Monday suspended manager Ronnie Moore while the English Football Association decides if he has breached betting rules.
On Friday it emerged that the FA wanted to speak to the 61-year-old over claims he broke rules by betting on a competition Tranmere are involved in.
Moore took charge of Tranmere on Saturday in the 2-2 draw at Bristol City, and conducted his press conference on Monday ahead of the game at Crawley on Tuesday.
However, the Prenton Park club issued a statement later on Monday which said they were suspending Moore until the conclusion of the FA's probe.
A statement from Tranmere on the club's official website read: "Tranmere Rovers have today announced that with immediate effect manager Ronnie Moore has been suspended until the conclusion of a Football Association investigation into a potential breach of betting rules.
"Assistant manager John McMahon has been placed in temporary charge of first-team affairs.
"The club will be making no further comment until the outcome of the investigation."