About a dozen FBI agents in bulletproof vests tore through Brian Laundrie’s house Monday, declaring it an “active crime scene” after human remains believed to belong to his fiance Gabby Petito were found in Wyoming.

"The #FBI is executing a court-authorized search warrant today at the Laundrie residence in North Port, FL relevant to the Gabrielle 'Gabby' Petito investigation. No further details can be provided since this is an active and ongoing investigation," the FBI in Tampa posted on Twitter.

According to the New York Post, agents were seen bringing equipment into the home and carrying pink evidence envelopes.

Laundrie, 23, was named a person of interest in Petito’s disappearance after he returned from a months-long van trip across the U.S. without her. The couple traveled together across the country, recording their trip on social media with the hashtag #vanlife.

Since Petito’s disappearance, Laundrie declined to comment and sought a lawyer. He also did not disclose his whereabouts. Authorities on Friday night confirmed that they do not know Laundrie's whereabouts and had searched a nature reserve near his home.

On Monday, North Port Police spokesperson Josh Taylor told CNN they have shifted their focus and “at this time, we currently believe we have exhausted all avenues in searching the grounds there."

After raiding Laundrie’s home, the FBI confirmed it was in connection to Petito and said an autopsy is planned for Tuesday to determine Petito’s cause of death.

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