LOUISVILLE, Ky. (WDRB) -- La Grange police are looking for two missing children, who they say might be in Mexico after their father failed to return them to their mother Sunday evening. 

Police say Maria Olguin, the children's mother, reported the two missing after their father, 40-year-old Edgar Gutierrez, did not show up to return the children to her as scheduled. 

Olguin told police Gutierrez picked up the kids for his visitation Friday afternoon and was supposed to return them to their mother Sunday at 2 in the afternoon. However, police say Gutierrez sent a text message to family that day saying he would return the children later.

When he did not arrive with the kids at 6 p.m. as he had scheduled, Olguin told police she thought he might have taken them to Mexico.

Police say Gutierrez was in Brownsville, Texas, just before 9 p.m. Sunday night. Officers contacted U.S. Border Patrol and Customs to locate the man and his children, but police say they believe Gutierrez had crossed the border into Mexico.

La Grange police are working with other agencies to find the children.

A warrant has been issued in Oldham County for Edgar Gutierrez for two counts of kidnapping, two counts of endangering the welfare of a minor and one count of custodial interference.

Anyone with information concerning this case or other criminal activity in LaGrange are asked to contact The LaGrange Police Department at (502) 225-0444 or Oldham County Dispatch at (502) 222-0111.

Copyright 2015 WDRB News. All rights reserved.