TAMPA, Fla. -- The Florida State Attorney's Office released graphic surveillance images in the deadly stabbing of a HART bus driver.
The photos captures the moments before and after 35-year-old passenger Justin McGriff allegedly stabbed 46-year-old Thomas Dunn in May.
Dunn died at the scene from his injuries.
The state attorney also released a photo of the articles of clothing McGriff wore during the deadly stabbing incident.
McGriff was arrested after he left the bus and officers located and chased him near I-275. He was originally only charged with resisting arrest without violence, but police later announced he was charged with first-degree murder.
Dunn's death prompted coworkers and bus drivers across the Tampa Bay area to call for improving safety inside the buses.
Five months prior to his death, Dunn told the HART board he was concerned about his safety detailing an incident that happened on his bus.
On the same day the state attorney released the photos, Pinellas Suncoast Transit Authority and the Service Employee International Union agreed to install safety barriers for all 210 PSTA buses.
When Dunn was killed, he did not have a safety partition between himself and the passenger to protect him from the attack.