An endangered persons advisory has been issued for a mother in Kansas with two young children who authorities believe may have been lured to a religious rehabilitation facility in Mexico.

The Kansas Bureau of Investigation is concerned that the family has been coerced into traveling to a 'religious rehabilitation facility' in Mexico with Corney and Elizabeth Klaasen.

The Klaasens are reportedly in their fifties and may be driving a white and black Chevy Blazer with a Mexican license plate.

Investigators have turned to the public for help locating 23-year-old Martha Unger and her daughters, Madilynn Grace Unger, 2, and Haylie Faith Unger, 1.

They were reported missing from their home in Haskell County on June 28 shortly before 7 p.m.

Martha was driving a 2015 white Ford Explorer with a Kansas license plate of 301RJY.

She is approximately 5'6", around 120 pounds and has brown hair and green eyes. Both daughters have blonde hair and blue eyes.

Anyone with information is advised to call 911 immediately.