Investigators Looking for Brian Laundrie Are Searching 'Large Bodies of Water'

Investigators looking for Brian Laundrie were searching bodies of water on Tuesday, according to police.

According to a statement from police in North Port, Fla., "Area resources are looking at large bodies of water, including dive teams, boats, and sonar equipment. At this time, this does not mean anything has been found. It's a part of the overall search process."

The statement said North Port police were on the scene "of a possible self-inflicted death," but said the death had "nothing to do with this case."

Laundrie, 23, was reported missing last Friday. Last Wednesday, he was named a person of interest in the case of Gabby Petito, his 22-year-old fiancée, whose body was found Sunday in Wyoming's Grand Teton National Park. On Tuesday, officials confirmed the body was hers and announced her death was a homicide.

For nearly two months, Gabby and Laundrie had been traveling across America in a white, repurposed Ford Transit van. Police say Laundrie returned to his parents' Florida home in the van on Sept. 1, and that he was alone.

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Gabby was reported missing on Sept. 11 — more than two weeks after her mother last spoke to her by phone. Laundrie and his parents refused to meet with detectives handling the case.

At this point, investigators have yet to say how Gabby was killed, but believe she died sometime between Aug. 27 and Aug. 30.

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In an FBI tweet announcing the confirmation of Gabby's homicide, Special Agent in Charge Michael Schneider said, "Anyone with information concerning Mr. Laundrie's role in this matter or his current whereabouts should contact the FBI."

Laundrie has not been named a suspect in the case.

On Sept. 15, PEOPLE spoke with Gabby's father, Joseph Petito, who said his daughter was "amazing."

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"She's so artistic. She's an amazing artist. She loves to draw," he said. "She has a great eye with decorating … She's that flower child type of personality. The old soul, you know?"

"If Woodstock was still going on, she'd still be there, man," Joseph added. "She's a hippie from the '60s, all right? She's a Beatles fan, round glasses … a free spirit."

If you have information on this case, call 1-­800-­CALL-­FBI (225­-5324).