Las Vegas police believe Stephen Paddock’s girlfriend may be hiding something.

Speaking to a local television station Wednesday, Clarke County Sheriff Joe Lombardo described how cops were suspicious of Marilou Danley and her claims that she knew nothing about Paddock’s murderous plans to shoot up the Route 91 Harvest Music Festival.

“There is a lot of people that have hundreds and hundreds of guns, but for this individual to do it at a certain point in time and to do it all with such robust action, you would think that Ms. Danley would have some information associated with that,” Lombardo told KLAS in a lengthy, two-hour interview.

“But currently we haven’t been able to pull that out of her, if it’s in her,” he said.

Danley — who was out of the country at the time of the Oct. 1 shooting — has told investigators she was totally clueless about the attack and had nothing to do with it.

But Lombardo finds it hard to believe she could have been left completely in the dark.

“It could have been prevented on many levels,” he said. “Marilou Danley, his brother, anybody that may have had some modicum of information that would have presented this individual’s state of mind, but apparently right now we don’t know that.”

Danley had been in the Philippines when Paddock unleashed his attack from inside the Mandalay Bay Resort and Casino. The shooting left 58 people dead and hundreds more injured.

Paddock reportedly wired $100,000 to an account in the Philippines just days earlier.

It’s been weeks since the massacre unfolded and authorities still don’t have a motive.

Investigators believe that money woes and a massive gambling debt may have been what pushed Paddock over the edge.

“He’s gone up and down in his wealth, [being] associated with gambling and real estate and everything else that he chose to do,” Lombardo said. “But since September 2015, he’s lost a significant amount of wealth and I think that might have a determining factor on what he determined to do.”