Karim Benzema has been placed under formal investigation in connection with a sex tape blackmail plot involving a team-mate.

The Real Madrid striker, who was held overnight, appeared in front of a judge today.

Police are investigating what part he played in an alleged attempt to extort money from fellow French international, Mathieu Valbuena.

Benzema told investigators he had approached Valbuena about the tape on behalf of "a childhood friend" but it is unclear if he was trying to convince his team-mate to pay the blackmailers.

If he is formally charged and then convicted, prosecutors say he could face a minimum five year custodial sentence.