THE FBI have taken over the mysterious case of two lawyers who went missing on a fishing trip.

Uncle and nephew, Randall Spivey, 57, and Brandon Billmaier, 33, were last seen on Friday after disappearing under ‘unusual’ circumstances.

The duo’s boat was found with the engine still running about 70 miles off Southwest Florida’s coast over the weekend.

But they were nowhere to be seen.

Several agencies from Collier County, Lee County, the Florida Guard, and the military all joined in on the search, which was called off on Monday.

Paul Rocuant, a friend of the missing men, said in a statement to rescue volunteers that numerous agencies had combed an area the size of Connecticut with advanced technology.

After the Coast Guard and other volunteer efforts were called off, the FBI said it would take over the investigation.

“The circumstances for why these two men are missing is certainly unusual,” Former FBI agent Richard Kolko told Wink News.

“So the FBI has initiated a missing persons case. They were beyond the territorial limits of the U.S. coast.

“So that gives them the authority to go out and, you know, kind of try and figure out what happened.”

Randy and Brandon’s family were informed on Monday that, given the amount of time, resources, and strategic efforts, if the men were alive, they would’ve been found already.

During the private briefing with the Coast Guard, the family was informed that all search and rescue efforts would be suspended.

Instead, the FBI would investigate the case to determine the circumstances of their disappearance.

‘EVERYTHING POSSIBLE HAS BEEN DONE’

“Few people were more concerned about the safety of innocent people than Randy and Brandon,” Rocuant told Wink.

“We know without question that they would reach the same conclusion as the experts, that everything possible has been done.”

Randy worked as an injury attorney for 30 years.

Brandon followed his uncle’s lead and began working as an attorney who advocates for injured people.

“This is incredibly difficult for the family and for everyone hoping for a different outcome,” Rocaunt’s statement continued.

“We respectfully ask that the decision to suspend the search be honored, both from a professional agency standpoint and from a volunteer standpoint.

“The search area, which is now more than 100 miles offshore, continues to move west and farther from shore, creating increasing risk, and it is no longer safe to ask volunteers to put themselves in serious danger. For those who know Randy and Brandon, there is no doubt this is exactly how they would feel.”

SUDDEN PANIC

The panic began at 7:30 pm on Friday after both men failed to communicate with their wives.

A few hours later, at 11 pm, the US Coast Guard deployed a helicopter to search for the men.

At 1:30 am on Saturday, the vessel was found, but the two men were nowhere to be seen.

The search broadened and continued throughout the weekend.

“Today, we continue to search with air & surface crews, pursuing all leads and saturating the search area,” Captain Corrie Sergent said on Sunday.

“Thank you to this amazing community for their support. Our thoughts are with the families as we continue our efforts.”