MUSKOGEE, OKLAHOMA: The 911 call made by a woman believed to be Terry Janway, the mother-in-law of NASCAR legend Jimmie Johnson, has been released by the authorities besides the body cam footage. The call reveals the chilling moments before Terry allegedly shot and killed her husband, Jack Janway, and their 11-year-old grandson, Dalton Janway, in their Oklahoma home on June 26.

According to the 22-second recording obtained by RadarOnline, the woman calmly gave her address to the dispatcher and said, "There's somebody here with a gun." When asked if she knew who the person was, she did not answer and hung up the phone.

Police suspect Terry was the sole shooter

Police arrived at the scene around 9pm and found Jack's body. They heard another gunshot from inside the house and later discovered Terry and Dalton dead as well. Police suspect that Terry was the sole shooter and died by suicide, but they have not revealed a possible motive for the horrific crime. Jack and Terry are the parents of Chandra Janway who has been married to Johnson since 2004 and shares two daughters with him. Meanwhile, TMZ reported eerie body footage of police responding to the scene. The police say the shots were fired by Terry, who died by suicide just after the officer arrived. Her body was found on the couch. Dalton, her grandson's body was found under a blanket in one of the home's bedrooms.

Dalton was Johnson's nephew and a fifth-grade student

Dalton was Johnson's nephew and a fifth-grade student at Sadler Arts Academy in Muskogee. He was "cherished by his teachers and fellow classmates," according to a statement from Muskogee Public Schools.

Johnson withdrew from the NASCAR Cup Series event in Chicago that he planned to participate in that weekend. His team, Legacy Motor Club, said in a statement that "the Johnson family has asked for privacy at this time and no further statements will be made." NASCAR also expressed its condolences to the family in a statement. Johnson is a seven-time champion and the only driver to win five consecutive championships from 2006 to 2010

Johnson is one of the most successful drivers in NASCAR history

He is one of the most successful drivers in NASCAR history. Some family members have speculated that Terry may have suffered from depression after losing her son Jordan in a skydiving accident in 2014. Jordan was knocked unconscious by a mid-air collision and his parachute failed to open. He was an experienced jumper who chose to go without a backup chip that could have saved his life. Marianne Janway, Johnson's sister-in-law, and Chandra's sister, posted on Facebook after the tragedy: "Please tell me this isn't really happening please god someone." The investigation into the apparent murder-suicide is ongoing.