MONTREAL - Quebec's corruption inquiry has requested a lengthy extension of its deadline, which could make it a potent force in the province's politics for up to two more years.

The inquiry head, Justice France Charbonneau, has asked Premier Pauline Marois to push the deadline back another 18 months.

Charbonneau says the additional time is needed for the probe to finish its work and make recommendations in a final report.

She indicated the commission's final report would be available in about two years, no later than April 19, 2015.

The government said in a statement that the request has been sent to cabinet for study and no decision has been made. However, Premier Pauline Marois has already offered a strong hint that she would be inclined to accept an extension request.

The commission was ordered in 2011 by then-premier Jean Charest after intense pressure, and was mandated to produce a report by this fall.