Mike Tur hadn't even left the island to accompany his brother's body back to Philadelphia when words alleging his sister-in-law's infidelity swirled through the Guantanamo Navy base in Cuba.

Tur had met the man whose name he had heard murmured at his brother's memorial service. It was John Nettleton. He went by "J.R." and he was the commander over U.S. Naval Base at Guantanamo Bay.

Christopher Tur, a 42-year-old Marine veteran, was working as a civilian contractor at Guantanamo Bay when he died. His wife, Lara Tur, also worked there.

Mike Tur said Nettleton expressed his condolences at the memorial service but didn't stick around for the luncheon afterward.

Christopher Tur's body was pulled from the bay on Jan. 11, 2015. He was drinking, he was unhappy, he was possibly suicidal, his brother repeated from what he said his sister-in-law told the family. Mike Tur always pegged his brother as a happy-go-lucky and doting family man.

When Christopher Tur's body came back to the United States, the newly widowed Lara Tur and her daughters moved in with Mike Tur and his family as they prepared for the funeral.

They sat at a table playing cards one day before the funeral when all of a sudden everyone's phones started blowing up with messages and phone calls telling them Nettleton's superior relieved him of his command, saying she had lost confidence in his abilities during Tur's death investigation.

But Mike Tur said he heard more than the military's public comments. He said he and others heard about an affair and a cover-up.

"She started to freak out," Mike Tur said of his sister-in-law.

Her daughters wanted answers and he did, too.

Was she having an affair?

She didn't deny it, Tur said in a one of several phone calls with the Times-Union this week.

"She had to confess," he said. "There was just no way around it."

Lara Tur did not attend her husband's funeral and her name was not listed in the obituary Mike Tur wrote. The couple celebrated their 19th wedding anniversary the month before he died.

Tur said his sister-in-law told him that when everything settled she and Nettleton would finally be able to be together.

Efforts to reach Lara Tur, who changed her name back to Lara Sabanosh, were unsuccessful.

Nettleton, who was reassigned to Jacksonville in early 2015 after being ousted from his Guantanamo command, was arrested Wednesday on allegations he interfered with the investigation of Tur's death.