How the search for Brian Laundrie unfolded

The Moab, Utah, police department has released a report from a second witness claiming he saw Gabby Petito and Brian Laundrie engaged in a domestic dispute in Moab on Aug. 12.

The witness told police he observed a man and a woman, later identified Petito and Laundrie, arguing over a cellphone about 4:30 in the afternoon outside a grocery store in Moab, according to a statement from police.

"They were talking aggressively @ each other & something seemed off. At one point they were sort of fighting over a phone -- I think the male took the female's phone. It appeared that he didn't want her in the white van. He got into the driver's seat & she followed him. At one point she was punching him in the arm and/or face & trying to get into the van," the witness wrote in the police report.

The witness, according to the statement, said the woman eventually climbed over the driver to get into the passenger seat and that she was overheard saying, "Why do you have to be so mean"?

"I wasn't sure how serious this was -- it was hard to tell if it was sort of play fighting, but from my point of view something definitely didn't seem right. It was as if this guy was trying to leave her, and maybe take her phone? Not sure but wanted to help out," the witness wrote.

Around the same time, a 911 caller told a Grand County, Utah, Sheriff's Office dispatcher that he witnessed Laundrie allegedly "slapping" Petito and chasing her up and down a sidewalk hitting her, according to a recording released by the sheriff's office.

As a massive search continued Wednesday for Brian Laundrie in south Florida's Carlton Reserve, the family of Gabby Petito was making arrangements to bring her remains home to her native New York for a funeral.

A large team of law enforcement officers and police K-9 units resumed their search of the roughly 25,000-acre preserve near North Port, Florida, where Laundrie's relatives told police he claimed he was headed to when they last spoke to him on Sept. 14.

Photos posted on Twitter Wednesday morning by the North Port Police Department showed officers from multiple agencies plotting areas to search, along with other images of high-water vehicles and search dogs.

The North Port Police Department said it had ended its search of the Carlton Reserve as darkness closed in with nothing found.

"Search of the Carlton & nearby lands concluded for the evening. Nothing of note," the police department shared in a tweet. "The current plan is to return Wednesday with a similar operation."

Police shared a photo of the search operation's base in the reserve as well as one of the bloodhounds being used to look for the missing person of interest in conjunction with the death of his girlfriend.

Gabby Petito's body was officially identified on Tuesday evening after it was found near Grand Teton National Park on Sunday. The Teton County coroner said Petito died via homicide, but did not yet announce a cause of death.

Sarasota police also later debunked a rumor that Laundrie had been taken into custody. It said on Twitter that they had received several tips about him being seen, but none of them panned out.

Police released a YouTube video Tuesday afternoon showing the extensive search going on in the sprawling Carlton Reserve near North Port.

The video showed officers from multiple law enforcement agencies using search dogs, drones and all-terrain vehicles to comb the 25,000-acre preserve.

"The terrain is very difficult. Essentially, 75% of it is under water and other areas that are dry we're trying to clear," a North Port police officer said in the video. "We're expecting to get wet by the end of the day and check the entire area for Brian Laundrie."