FRENCH bank Societe Generale says it has sacked the head of its Russian unit Rosbank, who was arrested last week in Moscow for accepting a $US1.5 million ($A1.54 million) bribe.

"The Board of Directors of Rosbank has initiated the process of dismissal of Vladimir Golubkov as CEO of Rosbank," said Societe Generale, which owns a controlling stake in the Russian bank.

Golubkov and his subordinate, Rosbank vice-president Tamara Polyanitsyna have both been charged with soliciting a bribe after being detained by police last Wednesday in a dramatic sting operation which found stacks of bank notes laid out on Golubkov's desk.

Societe Generale said the arrest has not affected the normal operation of Rosbank, which is now being managed by an acting chief executive under the supervision of the French bank's top executive in Russia.

It said Rosbank was fully cooperating with the Russian authorities and it had appointed the independent audit firm Deloitte to conduct a review as well.

Golubkov, who according to his lawyer has not admitted his guilt, faces up to seven years in jail if convicted on the bribe charges.

Police and investigators said he had demanded $US1.5 million from a businessman in return for extending the maturity and reducing the interest rate on a major loan.

The businessman turned to the police, who set up a sting with Golubkov allegedly arrested while accepting part of the bribe.

However, a senior Western banker has told AFP that Golubkov's arrest appeared to be a coordinated move against Societe Generale which owns an estimated 82 per cent stake in Rosbank.