TULSA, Oklahoma - Did Tulsa Police Officer Betty Shelby put her hand on her Taser before shooting Terence Crutcher?

Prosecutors say they took screen grabs from dashcam video that show Shelby with her left hand on her Taser.

That's after Shelby testified in her own defense for two-and-a-half hours Monday.

She did not make eye contact with the prosecutor, instead, looked at the jury the whole time.

Shelby testified in court Monday that Crutcher's death was his own fault.

"I did everything I could to stop this," Shelby testified.

Assistant District Attorney Kevin Gray said, "Everything but use a Taser."

Shelby replied, "My training didn't allow for a Taser at that point."

But prosecutors introduced new evidence late Monday afternoon - screen grabs from dashcam video that they say show Shelby placing her left hand on her Taser.

Shelby's attorneys asked her about her training and qualifications to be an officer. She said she gets about 200 hours of police training every year, even though the requirement is only 25 hours a year.

Shelby's attorneys also called up a few expert witnesses - including Dr. Kris Mohandie, a police psychologist whom they paid about $20,000 for his consultation.

Prosecutors revealed during their questioning that Mohandie has worked for several cable TV shows about crime, including the Investigation Discovery show, "Is OJ Innocent?"

Mohandie said Shelby's emotional interview with Sergeant Dave Walker was normal given the circumstances and did not necessarily mean she had an emotional mindset when she shot Crutcher.

Shelby's attorneys could call three more witnesses Tuesday, and closing statements could start Tuesday afternoon.