A police official said Benzema was put into custody after being summoned to a Versailles police station. Police are trying to find out what role the Real Madrid forward played in the extortion attempt targeting France midfielder Mathieu Valbuena.
Three other people have been handed preliminary charges since October.
Former France international Djibril Cisse was briefly detained last month after being suspected of conspiracy to blackmail, a charge with a maximum prison sentence of five years. Cisse, who has since retired, was released without seeing a judge.
Investigators are trying determine the extent of Benzema’s involvement in a months-long attempt to extort money from Valbuena after a sex tape found its way into the hands of suspected blackmailers.
According to sources, Benzema mentioned the intimate video to Valbuena when the French team met for training near Paris in early October.
The star striker learned of the video from a friend of his brother in Lyon who had been contacted by the suspected blackmailers with a view to involving Benzema in their scheme.
Police are seeking to determine whether Benzema was just teasing Valbuena when he mentioned the tape, or trying to make him pay the suspected blackmailers, who were charged last month.
Five years ago, charges were filed against Franck Ribery and Benzema for soliciting an underage prostitute in Paris.
The case lasted three years before they were acquitted.