Authorities are said to be sitting on a “mountain of evidence” against Alex Murdaugh to support the murder charges against him in connection with the deaths of his wife and son, PEOPLE reports.

A law enforcement source who reportedly has direct knowledge of the case against the now-disgraced and disbarred South Carolina lawyer told the magazine that investigators have accumulated evidence over the last year that strongly indicates he was physically present at the scene when the murders occurred.

Murdaugh had claimed to be visiting his ailing father in the hospital on June 7, 2021, when his wife, Maggie, and son Paul were murdered at a family hunting lodge in Islandton, South Carolina.

However, the source told PEOPLE that investigators found blood spatter on Murdaugh’s clothes, and that data from his phone, watch, and vehicle GPS all contradict his assertion of being at the hospital with his father at the time of the slayings.

Law enforcement is also said to have audio and video from cell phones that appear to put Murdaugh at the scene as he’s talking with Maggie shortly before she was killed, according to PEOPLE.

Police believe Murdaugh likely lured Maggie to the family estate by telling his wife that he wanted to accompany her to visit his father.

But sources told the magazine that Murdaugh and his wife were experiencing challenges in their marriage and that she was staying at the couple’s beach house about an hour away on Edisto Island.

Maggie initially declined to meet her husband at the hunting lodge but later agreed to it. She is said to have messaged a friend that she felt her husband was acting “fishy.”

“He’s up to something,” Maggie reportedly told the friend, according to PEOPLE.

In a statement to the magazine, a lawyer for Murdaugh wrote: “Alex wants his family, friends and everyone to know that he did not have anything to do with the murders of Maggie and Paul. He loved them more than anything in the world.”

Murdaugh faces two counts of murder and two counts of possession of a weapon during the commission of a violent crime. On Wednesday, he pleaded not guilty to the charges and was denied bond, as CrimeOnline previously reported.

Aside from the murder-related charges, Murdaugh is facing dozens of charges for allegedly stealing money from clients and from his former law firm, stealing money from a former housekeeper who died after falling on his property, and drug trafficking.

He also allegedly attempted to stage his own death in a failed attempt to cash out a $10 million life insurance payment for his surviving son, 26-year-old Buster. Murdaugh has pleaded not guilty to these charges, too.

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[Featured image: Alex & Maggie Murdaugh/Facebook]