Liverpool centre-back Mamadou Sakho is the subject of a UEFA investigation for a possible doping offence.

The English Premier League giants were alerted on Friday that Sakho’s conduct was being reviewed.

And they have decided to make him unavailable for selection until the matter is resolved.

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A Liverpool statement on Saturday read: “Yesterday, Friday 22nd April 2016, a formal communication was received from UEFA stating that they are investigating a possible anti-doping rule violation by Mamadou Sakho.

“The player will respond to UEFA on the matter.

“The player is currently not subject to any playing suspension.

“However, the club, in consultation with the player, has decided that while this process is followed, the player will not be available for selection for matches.

“There will be no further comment at this time.”

Liverpool signed Sakho from French giants Paris Saint-Germain in September 2013.

He has made 83 appearances in all competitions for the club, scoring four goals.