Birmingham have been raided by police officers investigating football corruption.
The club has promised to co-operate fully with police after financial documents were taken away to be examined early on Wednesday morning.
The raid is believed to relate to the Lord Stevens inquiry, which concentrated mainly on illicit payments to agents.
Birmingham have made it clear they have done nothing illegal and that the investigation is not linked with any official club business.
“The club is fully co-operating with the police in their inquiries which relate to an unconnected third party or third parties,” read a statement on the Birmingham website.
“For the avoidance of doubt no-one connected with the club has been questioned or arrested. No further comment will be made by the club.”