The warden of a prison in Cieneguillas, a city in the north-central Mexican state of Zacatecas, was kidnapped along with two relatives, state officials said.

Fabiola Quiroz Zarate was at her house Wednesday in the city of Fresnillo when several gunmen burst in and abducted her, Zacatecas Public Safety Secretary Jesus Pinto Ortiz said.

The prison warden's nephew and a female relative were also kidnapped, Pinto Ortiz said.

Officials have had no word from Quiroz Zarate or a ransom demand from her kidnappers, the public safety secretary told reporters.

State police are conducting a search in the northern section of Fresnillo, "where we have indications that they might have her," Pinto Ortiz said.

There were rumors around noon on Wednesday that guards at the Cieneguillas prison had gone on strike, the Zacatecas daily Imagen reported on its Web site.

Pinto Ortiz, however, denied that a strike had been staged.

"They are unhappy about some things, some concerns, but they are not on strike or anything like that," the public safety secretary said.

A delegation of prison guards met on Wednesday with Zacatecas Secretary-General Esau Hernandez Herrera "behind closed doors," the newspaper reported.

The 43-year-old Quiroz Zarate was named warden of the prison in Cieneguillas eight months ago.

She previously served as warden of the prison in Fresnillo and has worked at penitentiaries for more than 13 years. EFE