Brian Laundrie Family Attorney Says Remains Found Are Likely His

Brian Laundrie's parents are "heartbroken" after their family attorney says remains found off a Florida trail almost certainly belong to their son.

Steven Bertolino, who has repped the Laundrie family for weeks now, told CNN's Chris Cuomo Wednesday, "the probability is strong, that it is Brian's remains" found by the FBI.

Bertolino says Laundrie's parents contacted authorities Tuesday night to let them know they wanted to search the trail Wednesday, and the finding of his belongings was a total coincidence.

The FBI said in a press conference Wednesday that the area where Brian's backpack and notebook were found near what appeared to be human remains was previously under water. Authorities have not yet identified the remains, and say investigative teams will be in the area for several days gathering evidence.

Bertolino told Cuomo, "It's quite sad, you can imagine as a parent, finding your son's belonging alongside from the remains. That's got to be heartbreaking. And I can tell you that they are heartbroken."

Bertolino says Laundrie's dad, Chris, first found a white bag in the woods about 20 feet off the trail ... and shortly after, law enforcement discovered Brian's backpack.

It all raises the question ... how did Laundrie's dad zero in on something the FBI couldn't find for more than a month?