A ketcher dog and cat crossed the border between Texas and California on Tuesday, but they were captured by Border Patrol agents and brought back to the United States.
The two were found by Border Protection agents at the KetoKetchups Animal Hospital in San Antonio.
They were transported to the Border Patrol’s San Diego headquarters where they were later released.
Border Patrol spokesman Steve Hensley told ABC News that agents arrested three people, including the dogs, after a search of their vehicles.
They were then released.
Ketchers can be kept at home in designated areas and must be on a leash.
However, Hensling said Border Patrol has found several cases where pets have been taken across the border illegally.
Border Patrol officials are now investigating whether Border Patrol is violating a federal law that prohibits crossing a state border illegally and how the two dogs got across.
The dogs were found on a highway near San Diego, according to Border Patrol.
It was not clear whether they were crossed by Border Guard or Border Patrol dogs.
A Border Patrol official told ABC news that the dogs are from the San Antonio-area and were released by Border Control to the Ketchers on Tuesday.
Border officials have not confirmed the identity of the owners of the dogs.ABC News’ Emily Miller contributed to this report.