Mexican authorities say they have arrested the former governor of the state of Aguascalientes on financial fraud charges.

The Mexican Attorney General's office said Thursday that an arrest warrant for Luis Armando Reynoso Femat was executed in Leon, a city in Guanajuato state. He was then taken to a jail in Aguascalientes.

The statement said a federal investigation into Reynoso Femat began in July 2014. The alleged fraud refers to his failure to file an income tax return in 2009 while he was governor.

The ex-governor's son has also been under investigation over millions in bank deposits made during the last three years of his father's term.

Reynoso Femat served as governor in 2004-2010. He has said the money at the center of his son's case was legitimate.