Seven-time NASCAR Cup Series champion Jimmie Johnson will not race in Sunday's Grant Park 220 race on the streets of Chicago following the deaths of three family members in a shooting on Monday.

According to published report on TMZ, police in Muskogee, Okla., are investigating a possible muder-suicide following a shooting at the home of Jimmie Johnson's wife Chandra's parents on Monday. TMZ reports that Chandra's parents Jack and Terry Janway, along with nephew Dalton Janway were found dead on Monday evening.

celebrities at le mans 24 hour race
Jimmie and Chandra Johnson, pictured earlier this month at Le Mans, where Jimmie raced the NASCAR/Hendrick Motorsports Garage 56 entry.
Marc Piasecki//Getty Images

According to a report on the Muskogee Phoenix website, Jack Janway was 69 years old, Terry Janway 68, and Dalton Janway was 11. Dalton is Jimmie and Chandra's nephew and the grandson of Jack and Terry Janway. Muskogee police are treating it as a possible murder-suicide.

The incident is under investigation.

Legacy Motor Club, which Johnson is a co-owner and part-time driver, issued the following statement on Tuesday:

MOTOR CLUB has elected to withdraw the No. 84 Carvana Chevrolet from this weekend’s NASCAR Cup Series event in Chicago.
The Johnson family has asked for privacy at this time and no further statements will be made.

This is not the first tragedy to hit the Janway family.

According to multiple published reports, 27-year-old Jordan Janway—son of Jack and Terry Janway—died in a tragic skydiving accident in San Diego in 2014. Jordan was a skydiving instructor who collided with another skydiver in midair and was unable to open his parachute.

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Mike Pryson
Mike Pryson covered auto racing for the Jackson (Mich.) Citizen Patriot and MLive Media Group from 1991 until joining Autoweek in 2011. He won several Michigan Associated Press and national Associated Press Sports Editors awards for auto racing coverage and was named the 2000 Michigan Auto Racing Fan Club’s Michigan Motorsports Writer of the Year. A Michigan native, Mike spent three years after college working in southwest Florida before realizing that the land of Disney and endless summer was no match for the challenge of freezing rain, potholes and long, cold winters in the Motor City.