TAHLEQUAH, Oklahoma - The Cherokee County district attorney filed a negligent homicide charge against the widow of Craig County Deputy Sean Cookson.

Cookson, 23, died of injuries he received in a crash February 22, 2017.

Cassandra Cookson is an Adair law enforcement officer and the couple was headed to a training exercise when the wreck happened. Court records say Cassandra Cookson was driving the couple's Chevy Silverado pickup over 90 mph in heavy fog when the crash took place on Highway 82 about six miles north of Tahlequah.

The truck rear-ended a car that was stopped to make a left turn then collided head-on with an SUV, according to the Oklahoma Highway Patrol. Cassandra Cookson was injured in the crash, Sean died at the hospital nearly a week later.

Cherokee County District Attorney Brian J. Kuester said she operated a motor vehicle in reckless disregard of the safety of others. The DA's office says it's waiting for Cassandra Cookson to turn herself in.

The charge against her is a misdemeanor that is punishable by a fine of $100 to $1,000 and/or imprisonment for up to one year.