Manchester City have been charged with a breach of Football Association anti-doping rules.
Few details have been given but Press Association Sport understands the charge was issued following an alleged third violation of rules concerning 'club whereabouts' in the space of 12 months.
Clubs are required to keep the FA informed of the location of their teams at all times in order to facilitate drug-testing. A "three-strike" policy is operated, meaning that a charge is only triggered after three infringements in the space of a rolling one-year period.
The charge is one of misconduct relating to the club rather than any particular individuals.
A statement from the FA read: "Manchester City have been charged in relation to the FA's rules on anti-doping.
"It is alleged the club failed to ensure that their 'club whereabouts' information was accurate, contrary to Regulation 14(d). City have until January 19, 2017 to respond to the charge."
City would most likely face a fine if found guilty, it is understood.
The matter concerns a breach of FA rules only and is not under the jurisdiction of the World Anti-Doping Agency or UK Anti-Doping, which does not deal with team violations.
The FA regulations detail that a breach of whereabouts rules is committed in documents provided by clubs " if the information contained in such reports is either initially inaccurate or has not been updated by the club as necessary to ensure it remains accurate".
City were not the only club to be charged on the issue on Wednesday, with League One outfit Fleetwood also facing the same complaint.
The FA said Fleetwood also failed to ensure 'club whereabouts' information was accurate.