Breaux was last seen after 10:00 p.m. on August 28, 1991, in the vicinity of the 100 block of Bernard Street in Houma, Louisiana. He stopped at a convenience store to purchase a gallon of milk, and this was the last time he was seen. His silver four-door 1988 Ford Tempo was found locked and abandoned two days later, parked across the street from where he was last seen. His wallet was inside the vehicle, as was his personal checkbook and the checkbook for the local Alcoholics Anonymous chapter which he was secretary of, and a brown bag containing $165 in Alcoholics Anonymous funds. The vehicle was low on fuel, although Breaux had purchased $10 worth of gasoline just hours before he vanished. The car keys were missing, as was the carton of milk Breaux had just bought, and neither of these items were ever found. He has never been heard from again.

A witness who knew Breaux reported seeing him on the same day his car was found. He didn't realize Breaux was listed as a missing person. He said Breaux was unkempt and dressed in old, badly fitting clothing, which is uncharacteristic of him, and he appeared to be nervous. He may have been accompanied by three men in a red compact car. Another witness also says he saw Breaux in a red compact car with three males.

Breaux was employed as a salesman at Earl Williams Clothing Store at the time of his disappearance; he had worked there for over thirty years. He battled an alcohol problem for many years and had one prior drunk driving arrest, but he stopped drinking eight years prior to his disappearance. If he started drinking again, he could have developed memory loss. His family believes he was taken against his will. Breaux was declared legally dead in August 1998, but his case remains unsolved.