Mindy McCready and David Wilson
Courtesy Mindy McCready
02/19/2013 at 09:00 AM EST
When Mindy McCready talked to police in recent weeks, her account of how her boyfriend came to be found with a fatal gunshot wound to the head
concerned police, a law enforcement source tells PEOPLE.
"At first, she said she hadn't heard the gunshot because the TV was too loud. Then she said she had heard the gunshot," the source says. "So obviously there were a lot of questions, and the Sheriff was asking for clarification."
But before investigators could re-interview her, the long-troubled country singer
also would die under eerily similar circumstances
, her body discovered at the same Heber Springs, Ark., house just feet away from where David Wilson died.
McCready's death was blamed on what "appears to be a single self-inflicted gunshot wound," the Cleburne County Sheriff's Office said in a statement.
This differed from how the sheriff characterized Wilson's case. His cause and manner of death still have not been established by the coroner. It was McCready's publicist, and not a law enforcement official, who announced that Wilson had died of a self-inflicted gunshot wound.
After Wilson's death, McCready, 37, spoke to investigators three times, but they didn't feel as if they were through with her.
"At no point did [police] tell her she was a suspect, and she wasn't officially one," says the source. "But she knew that some of her answers didn't stand up to questioning. She was very cooperative, but she just wasn't making a lot of sense."