Police have arrested a man in the fatal shooting of a 65-year-old taxi cab driver.

Justin Marquis Graves, 34, of Marietta, was arrested by the Marietta Police Department in connection with the shooting, which occurred early Thursday morning, according to a news release.

Officers were called shortly before 3 a.m. to the Allround Suites in the 2200 block of Northwest Parkway on a report of an unresponsive driver, Officer Brittany Wallace said. The cab driver was dead in the driver’s seat from a gunshot wound, she said.

Thursday afternoon, the cab driver was identified as Michael Bemus of Austell.

Graves is being charged with felony murder in the shooting and is being held at the Cobb County Jail. There was no known motive for the crime.

Graves is a convicted felon who previously spent nearly two years in prison after being convicted of aggravated assault in Gwinnett County, according to the Georgia Department of Corrections. He was released from prison in February 2012.

— Staff writer Daniel Funke contributed to this article.