Laundrie further tried to cover his tracks by sending text messages from his phone to Petito's phone and using her phone in return to respond.
Netflix's documentary American Murder: Gabby Petito reveals how Laundrie fraudulently used Petito's debit card in a desperate attempt to cover his tracks.
Gabby Petito's killer Brian Laundrie used her credit cards to make it seem she was still alive, a new Netflix documentary has revealed.
'Text messages to Gabby's phone are not read until Brian gets back to the Spread Creek area, where Gabby's phone was left.'.
'As Brian is hiking, text messages are being sent to Gabby's phone which was back at the Spread Creek area,' FBI special agent Kyle, whose surname has been kept private, said.