Arrest warrant alleges Brian Laundrie spent $1,000 on an 'unauthorized' Capital One debit card following Gabby Petito's death

• An arrest warrant for Brian Laundrie alleges that he spent $1,000 on an unauthorized debit card.
• Authorities say the warrant is related to Laundrie's activities after the death of Gabby Petito.
• Laundrie's family says he's been missing since last Tuesday. Officials are still searching for him.

An arrest warrant issued for Brian Laundrie on Wednesday alleged that the 23-year-old spent at least $1,000 using an "unauthorized" Capital One debit card in the days following the death of his 22-year-old fiancée, Gabby Petito.

Charging documents for Laundrie did not say to whom the unauthorized account belonged, but Suffolk County Police Department records obtained by Insider showed that Petito banked with Capital One.

Laundrie, who has been missing for more than a week, faces one count in relation to his activities following Petito's death, which was ruled a homicide earlier this week.

In a statement to Insider, Laundrie's attorney Steve Bertolino said, "It is my understanding that the arrest warrant for Brian Laundrie is related to activities occurring after the death of Gabby Petito and not related to her actual demise."

The warrant alleged that Laundrie committed a crime beginning on or around August 30 until September 1, which puts Petito's death before that time. The 22-year-old was last seen on August 24 and spoke to her mother for the final time the following day.

Petito's mother reported her missing on September 11, more than a week after Laundrie returned to his Florida home in the couple's shared van without Petito.

On September 19, a body that authorities believed was "consistent with" Petito's description was found in the Grand Teton National Park near the Spread Creek camping site. The FBI and the Petito family's lawyer later confirmed that the remains belonged to Petito.

Laundrie's family later told authorities that he's been missing since last Tuesday, after he went on a trip to the Carlton Reserve in Florida.

The FBI's Denver office tweeted the arrest warrant and charging document on Thursday afternoon, but the tweet containing the criminal charge later appeared to be deleted.