Oklahoma City police say former Chesapeake Energy CEO Aubrey McClendon was driving 78 miles per hour when his SUV hit a bridge support and there is no evidence suggesting he tried to veer away to avoid the fatal crash.
McClendon died March 2, a day after a federal grand jury indicted him on a bid-rigging charge.
The part-owner of the NBA's Oklahoma City Thunder had vowed to fight the accusation.
Police said Monday that McClendon's vehicle's data recorder shows that he had been driving 88 miles per hour and tapped his brakes, but not in the 31 feet before impact.
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Investigators found tire tracks but no skid marks.
They wouldn't comment when asked if they believe McClendon intended to crash.
"We're not going to speculate because you just don't know," Oklahoma City Police Chief Bill Citty. "You don't know what was going through his mind at the time. You don't know what was going on in the cabin of the vehicle. So we're not going to speculate. Basically what you're getting today are the facts. There's a lot of things that can affect those things, you know I mean anything is possible. You don't rule it out, but we can't say it is, either."
Police are checking his cell phone records to determine if he was on the phone.