Brian Laundrie didn't take his phone or wallet when he left home last week, a source told CNN.
Tracking phone and bank-card use are common ways police can find people.
Laundrie is a person of interest in his fiancée Gabby Petito's death. He's been missing for a week.
Brian Laundrie did not take his phone and wallet with him when he left his family home last week, CNN reported, which means it would be harder for police to track him.
Laundrie, 23, was reported missing by his parents on September 17. Police in multiple jurisdictions have been searching for him, though they say they have made little progress.
Laundrie has been named a person of interest in the death of his fiancée, Gabby Petito. She was reported missing as during the couple's road trip in a van, and her remains were found and identified in Wyoming on Sunday.
A source close to Laundrie's family told CNN's Chris Cuomo on Thursday that he didn't bring his cellphone and wallet when he left the home, which he had returned to in September after coming home from the road trip alone.
Tracking people's phone and bank card usage is a common way for police find suspects.
The North Port police declined to comment on to CNN.
"I can not give any statement to a timeline at this time. That investigation is being conducted by the FBI," the department's public information officer, Josh Taylor, told the network.
A Wyoming court issued a federal arrest warrant for Laundrie on Wednesday. It said he spent at least $1,000 using an "unauthorized" Capital One debit card in the days after Petito's death.
Read the original article on Insider