Hull City have condemned racist abuse directed towards head coach Liam Rosenior on social media and reported it to Humberside Police.
The abuse came after Rosenior was announced as a nominee for Championship manager of the season on Wednesday.
The club said they were "disgusted" and would work with relevant authorities to "identify those responsible".
"Hull City has zero tolerance of any form of discrimination," said the club in a statement.
"Our stance is clear: racism has no place in football or society."
Speaking to BBC Radio Humberside on Thursday, Rosenior said action needed to be taken.