ADA, Okla. (KFOR) — The wife of an Oklahoma pastor and her alleged accomplice have been arrested in connection with his murder.

The Oklahoma State Bureau of Investigation told NewsNation affiliate KFOR that David Evans wife, Kristie Evans, was arrested last Wednesday after confessing to his murder and an accomplice, Kahlil Square, was also arrested for murder. Officials say all three were allegedly involved in a love triangle.

“A couple of months ago is when the three of them first met up,” said Capt. Beth Green, Oklahoma State Bureau of Investigation.

David’s wife, Kristie Evans, along with alleged accomplice Kahlil Square, are accused in David’s death.

“The three of them, Kristie, Kahlil and David, had a sexual relationship. Kristie and Kahlil also had a separate sexual relationship, just the two of them,” Green said.

David was the pastor of Harmony Freewill Baptist Church in Ada, Oklahoma. OSBI was brought in to investigate on Monday after Kristie called 9-1-1, reporting an intruder had come into their home and shot David.

“She came back on her own accord yesterday to the Ada Police Department and confessed. Prior to that, she had been interviewed several times,” Green said.

Court documents say the couple “first met Kahlil months ago at a Super 8 Motel.”

The documents also say “Kristie, David, and Kahlil had sex at a Super 8 Motel on more than one occasion,” and that Kristie secretly gave Kahlil her phone number without David’s knowledge.

The week before, the documents allege Kahlil stayed over at Kristie’s house, while David was away on a mission trip to Mexico. That’s allegedly when the murder was planned.

“The plan was for Kahlil to come into the house in the middle of the night and shoot David with the gun and ammunition that actually belonged to David that Kristie had given Kahlil,” Green said.

Neighbors gave investigators surveillance footage showing what was allegedly Kahlil’s white Ford Mustang at the house the night of David’s death.

Kristie shared a post to her Facebook page on the day before the murder, saying David had sent her specialty-made necklaces while he was in Mexico. The post saying in part, “So, every day, I opened a card and was reminded of how blessed, loved and lucky I am!!! I love you so much, David!!!!”

But she told OSBI a different story, saying David would call her names like “slut,” “fat” and “ugly.”

“What she told agents was that he was verbally abusive and controlling of her,” Green said.

David also shared a post to Facebook on the morning before his death saying, “Live your life so that people realize we are no longer dead, but are alive again.”

Harmony Freewill Baptist Church sent KFOR the following statement on Friday:

“Harmony Free Will Baptist Church has been grieving the death of our Pastor, David Evans, over the last few days. The circumstances that are now coming to light have taken us by surprise and we are greatly saddened. We serve a perfect Savior, Jesus Christ, who gave His life for us. These revelations do not diminish that truth and we will continue to serve Him. We are aware that even pastors can succumb to human frailty and we ask that our privacy be respected at this time as we as a church family grieve and process all of these events.”

HARMONY FREE WILL BAPITST CHURCH SPOKESPERSON

Both Kristie and Khalil are facing first-degree murder charges.