A Shawnee man was formally charged Tuesday with two counts of first-degree manslaughter relating to the January traffic deaths of two Tecumseh High School students.

After a thorough investigation by the Shawnee Police Department, the Oklahoma Highway Patrol, the District Attorney's Office and after meeting with families, District Attorney Allan Grubb charged Roger Dean Flint, 62, in Pottawatomie County District Court.

Charges were the result of a traffic accident Jan. 26 along 45th Street near Aydelotte Street.

The students, Logan Don Deardorff, 18, and his passenger, Shelby Danielle Johnson, 17, were killed as a result of injuries suffered in that crash.

According to the filed charges, Flint was recklessly driving a 2019 Honda Accord eastbound on 45th Street in a “careless and wanton manner” when his vehicle struck the Ford Mustang driven by Deardorff.

“It is important that those who cause the death of others by their criminal behavior be held accountable for their actions,” Grubb said Tuesday in a written statement.

The two-vehicle crash occurred about 5:11 p.m. Jan. 26. Both vehicles were eastbound, with the initial accident report indicating the Honda rear-ended the Ford Mustang.

Witnesses to the accident told officers that Flint’s Honda ran off the road multiple times before the accident occurred and the report shows the Honda was traveling at a high rate of speed.

According to an arrest affidavit, Flint's vehicle was going 122 mph at impact and the accelerator was fully engaged with no braking or steering input. The court document also indicates Flint had a history of having seizures and also had prior traffic accidents.

The arrest warrant with a $50,000 bond was issued with the filing of the charges, with records showing Tuesday evening that Flint had posted bond.

Upon a conviction, each count of manslaughter can be punishable by not less than four years in prison.

Watch for updates.