The father of Florida fugitive Brian Laundrie went to the Carlton Reserve to search for his son on September 13, the day before Brian’s parents initially told police they last saw him.

As previously reported, the Laundrie family attorney, Steven Bertolino, previously corrected the timeline of Brian Laundrie’s last sighting by his parents: Though they told police on September 17 they last saw him on September 14, three days after his girlfriend Gabby Petito was reported missing, it was actually September 13, Bertolino said this week.

“The Laundries were basing the date Brian left on their recollection of certain events. Upon further communication with the FBI and confirmation of the Mustang being at the Laundrie residence on Wednesday September 15, we now believe the day Brian left to hike in the preserve was Monday September 13,” Bertolino said in a statement.

Bertolino has since told CNN that Brian’s father Chris Laundrie went to the nature reserve to look for his son on September 13, the day he purportedly left to go on a hike there. The parents also went back the next day, the attorney said,

Petito was found dead in Wyoming’s Bridger-Teton National Park on September 19. Authorities determined she died of homicide but have not yet released the specific cause of death. Laundrie was named a person of interest in Petito’s disappearance but no one has yet been named a suspect in her death.

It remains unclear why Laundrie’s parents waited days to tell police their son had disappeared.

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