New Mexico agriculture officials on Monday confirmed the state’s first case of New World screwworm, detected in a Lea County dog, just days after the first incursion of the devastating parasitic fly in a south Texas calf.

The infested dog, who resides in Eunice, was originally mistaken for a Texas case after being diagnosed over the state line by an Andrews County veterinarian this weekend, New Mexico Agriculture Secretary Jeff Witte said in a virtual news conference Monday. The case is the fourth detected in the U.S. so far.