Feds Investigating Brian Laundrie's Alleged Burner Phone Purchased Day He was Last Seen

The federal authorities are looking for a burner telephone Brian Laundrie allegedly bought the day he disappeared... TMZ has learned.
Sources close to the Laundrie manhunt tell TMZ that FBI agents visited an AT&T store near North Port, FL where Laundrie's parents reside and confiscated surveillance footage.

According to our sources, Brian went to the store on September 14th with an older woman. He purchased the phone there before they left.

This is important because Laundrie's parents claim that he last left their home on Sept. 14. They claim he was carrying his backpack and going to a nearby reserve of nature. But he never returned. He was reported missing September 17.

We reached out to North Port AT&T to confirm Brian's presence on Sept. 14, and were told by an employee that she couldn't verify or deny it. AT&T corporate was also contacted. They said, "Thanks, for reaching out to us." This one is for law enforcement.

We reached out to law enforcement again. They refused to confirm or deny.

We broke the story... Dog the Bounty Hunter claimed that he knows Laundrie is still living and said he's getting close to him.