The International Association of Athletics Federations (IAAF) has confirmed that its headquarters were raided by police on Tuesday as part of an investigation over anti-doping rules and regulations.
It emerged on Wednesday that former IAAF president Lamine Diack is reportedly being investigated by French authorities amid allegations of corruption and money-laundering.
Diack, who was replaced by Seb Coe in August, is accused of covering up positive drugs tests from Russian athletes.
The governing body confirmed that French police had been to the Monaco headquarters and vowed to cooperate with the investigation.
"The IAAF confirms that, emanating from separate ongoing investigations by WADA's independent commission and the IAAF's own independent Ethics Commission into allegations surrounding its anti-doping rules and regulations, a French police investigation has now commenced," a statement read.
"The IAAF is fully cooperating with all investigations as it has been from the beginning of the process.
"As part of the French investigation, police visited the IAAF HQ offices yesterday to carry out interviews and to access documentation."