Police to quiz politician about Mexican drug lord El Chapo
Investigators are to quiz a politician about her relationship with Mexican drug lord Joaquin "El Chapo" Guzman.
Police were transporting Lucero Guadalupe Sanchez to Mexico City for questioning, Mexico's attorney general's office said.
It is part of a probe into her alleged use of fraudulent documents to visit Guzman in April in the maximum security prison he escaped from a couple of months later.
The state politician, from Guzman's home of Sinaloa, has not been charged with any crime, but she resigned her position with the opposition National Action Party on Wednesday.
On Monday, El Universal newspaper published an interview with attorney general Arely Gomez in which she said the government believed Ms Sanchez spent New Year's Eve with Guzman in Sinaloa.
Guzman, of the Sinaloa cartel, was captured on January 8 after his second escape from a Mexican maximum security prison.