He remains missing.
The gunman was later found dead after opening fire at a suburban supermarket in Memphis.
Officials believe the temperature in the car reached over 120 degrees (farenheit).
It's believed the Pinterest account was used by both Laundrie and his now-deceased girlfriend, Gabby Petito.
The effort to find Brian Laundrie, 23, in the swampy Carlton Reserve will resume on Thursday (local time).
"There's a rate of violence against Native women that's happening and it doesn't seem to be highlighted."
Police and FBI agents have resumed their search of a swampy Florida wilderness for Brian Laundrie.
"We just have so many questions hanging over the case."
Her fiance remains missing.