In Arkansas, a 40-year-old woman and her 51-year-old boyfriend face charges for allegedly murdering her ex-husband, who was also the father of her child. This tragic event occurred just three days after her divorce was finalized and she lost a custody battle.

This week, Amanda Penny and Michael Hogue were arrested, accused of first-degree murder and unlawful firearm possession in connection with the death of Kevin Nikel earlier this year, according to authorities.

Nikel, who once wrestled professionally under the name Knuckles Madsen in WWE, was the victim in this case.

The Benton County Sheriff’s Office reported that deputies responded to a shooting incident on the night of July 11, along Highway 12 near Rogers. Upon arrival, first responders found Kevin Nikel with a gunshot wound to his abdomen.

The U.S. Marshal Service (USMS) tracked down and arrested Hogue in Fort Smith and Penny in Rogers, as detailed in the official news release.

Court documents state that Nikel was the primary caregiver of the couple’s son until the day he was allegedly killed by Hogue, who was “the cohabitating romantic partner of Amanda Penny,” attorneys for Nikel’s mother wrote in filings seeking to take custody of the child.

In addition to revealing there was a court order prohibiting contact between Hogue and the child of Penny and Nikel, court documents also claimed that Nikel was to maintain primary custody of the boy until Penny was able to pass a hair follicle drug test, which she had not done as of July 11.

Nikel’s mother, Susan Kinderman, who earlier this year was awarded custody of her grandson, told Fort Smith CBS affiliate KFSM that even after the arrests, she still has many unanswered questions about why her son was killed.

“We still don’t know exactly what happened when he got shot. The detectives have been pretty close lipped on that, which is good, but we’d still like to know exactly what happened and who did what,” she told the station.

Kinderman was reportedly told that some kind of argument took place between the two men that led to Hogue shooting Nikel. The argument may have began via text messages.

“There was some kind of an argument. Maybe there was texting going back and forth,” she said. “I think they enticed Kevin to meet up with them. I was told by the detectives that there was some kind of altercation. Shots were fired, and Kevin was killed, and that’s all we really know.”

Nikel’s obituary says that his son was “his entire world” and that he will be missed “by everyone who knew him personally or attended one of his shows.”

Both of the defendants were being held in the Benton County Jail without bond as of Tuesday. It was not immediately clear when they were scheduled to make their initial court appearances.