Brian Laundrie's father was asked to help North Port Police search for him at a Florida nature preserve Wednesday but police had to postpone, family attorney Steve Bertolino told CNN.
"Chris Laundrie was asked to assist law enforcement in their search for Brian at the preserve today," Bertolino said. "Since the preserve has been closed to the public, Chris has not been able to look for Brian in the only place Chris and Roberta believe Brian may be. Unfortunately North Port police had to postpone Chris' involvement but Chris and Roberta are hopeful there will be another opportunity to assist."
CNN asked Bertolino whether Brian's parents believe he's in the preserve or another area.
"No, they don't believe he's in another area. They believe he is in the preserve," Bertolino said.
The attorney's statement came the same day that the Sarasota County Sheriff's Office was asked to help in the search for Laundrie at the reserve, the office said.
Aerial video recorded above the Carlton Reserve showed police vehicles in the area.
Bertolino confirmed to CNN that authorities are communicating with him about any developments.
Though authorities have not explicitly connected Laundrie to Petito's death, they've been looking for him, in part over a federal arrest warrant accusing him of illegally using another person's debit card.
North Port, Florida, police have said Laundrie returned to the couple's home on his own from their trip on Sept. 1 — roughly 10 days before Petito's family reported her missing. The white van the couple had been traveling in was later recovered at the home.
More than two weeks later, Laundrie's parents — who had not been communicating with authorities, other than through their attorney — requested police come to their home where they shared they hadn't seen their son since Sept. 14.
This week, Bertolino told CNN that upon further communication with the FBI, "we now believe the day Brian left to hike in the preserve was Monday, Sept. 13."
"The Laundries were basing the date Brian left on their recollection of certain events," Bertolino said Wednesday. "Upon further communication with the FBI and confirmation of the Mustang being at the Laundrie residence on Wednesday Sept. 15, we now believe the day Brian left to hike in the preserve was Monday Sept. 13."
North Port police confirmed Wednesday that an abandoned vehicle notice was placed on a Ford Mustang belonging to the Laundrie family outside the Myakkahatchee Creek Environmental Park on Sept. 14.
Myakkahatchee park is an entrance to the Carlton Reserve.
Bertolino told CNN on Wednesday that Laundrie's father, Chris, went to look for him on the night of Sept. 13 when he didn't return from the park.
The next day, on Sept. 14, both of Brian's parents returned to the area to look for Brian and saw the citation on the car, Bertolino said.
The parents returned again the next day, Sept. 15, to retrieve the vehicle.