Samir Nasri is being investigated by Spanish anti-doping authorities after his Twitter account was hacked on Tuesday night, according to reports in Spain.
A series of bizarre tweets were sent from Nasri's account in response to a post from Drip Doctors, a service he is understood to have used for an intravenous treatment.
While most of the focus was on Nasri's alleged infidelity to his then-girlfriend Anara Atanes, it has now emerged that the French playmaker could be investigated for anti-doping offences.
After the tweets were brought to their attention by a former Australian anti-doping official, the Spanish anti-doping agency (AEPSAD) are investigating Nasri, according to newspaper El Pais, because intravenous treatments are banned by the World Anti-Doping Authority (WADA) for treatments over 50ml.
The situation came to light when a picture linking the 29-year-old to Drip Doctors was posted with the message: 'We provided @SamNasri19 a concierge Immunity IV Drip to keep him hydrated & in top health during his busy soccer season.'
This was then quoted by Nasri's own account, which he later confirmed had been hacked, followed by a string of accusations that he had cheated on his girlfriend Anara Atanes.
Atanes has since tweeted that 'the amount he had is perfectly fine'.
The pair were together for two years until February of last year when they split, but appear to have reunited recently - only for Tuesday night's events to emerge.