PARIS --

Former France striker Djibril Cisse has been arrested as part of an investigation into a blackmail case that allegedly involves another football player.

Versailles prosecutor's office said in a statement that three other people were also put in custody on Tuesday morning.

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Cisse is accused of conspiracy to blackmail, a charge with a maximum prison sentence of five years.

A prosecutor's spokeswoman said the identity of the victim won't be revealed ''out of respect for his/her private life.''

The 34-year-old Cisse, whose career has been marred by injuries, is currently without a club. A former Liverpool player, Cisse scored nine goals in 41 games for France.