Denver police announced Friday that they had arrested a local 29-year-old Uber driver, Michael A. Hancock, on suspected first-degree murder.

Hancock is believed to have shot and killed his passenger with his Ruger SR40 in the early hours of Friday morning while they were driving down Interstate 25, a primary north-south artery in the city.

UPDATE: 29 YO Michael Hancock has been arrested for investigation of first degree murder for the early morning shooting on I-25 and Unversity. pic.twitter.com/YVvKFVy5ge — Denver Police Dept. (@DenverPolice) June 1, 2018

According to USA Today, Hancock shot Hyun Kim, 45, after he claimed that Kim assaulted him.

Andrew Hasbun, an Uber spokesman, sent Ars a statement saying that the company was "deeply troubled" by the shooting.

"Our thoughts are with the families of those involved," he wrote. "The driver's access to the app has been removed, and we will continue working closely with police."

Hasbun also noted that Hancock has been a driver for nearly three years and that the company is cooperating with Denver police.

It's not clear exactly what transpired in the car that lead to this tragic outcome, although authorities recovered 10 bullet casings from the scene.

"He's a husband, a father, a college student. He works two jobs," Stephanie Hancock, his mother, told KUSA-TV. "It's a terrible, terrible thing that happened. We don't know anything else."

Michael A. Hancock is is unrelated to Denver's mayor, Michael B. Hancock.