A 68-year-old Queens man has died from injuries he suffered during a road rage incident last month. The Daily News reports that Chun Man Tse lapsed into a coma before dying Saturday, succumbing to head injuries he suffered in an assault perpetrated by another driver last month in Flushing.

Tse had been driving on Colden Street to the Self-Help Benjamin Rosenthal senior center to work a shift as a volunteer cook on July 22nd when he got into a fender bender accident with 44-year-old Cleamon Anderson. According to NBC, both men got out of their vehicles to inspect the resulting damage and got into an argument that ended with Tse being punched in the head.

When police arrived at the scene, Anderson's passenger—who is also his sister and works as an NYPD school safety agent—allegedly told investigators that Tse had fallen down. However, surveillance video captured Anderson striking Tse in the head, and police confirmed to ABC that her employment has been suspended following the attempted cover-up.

Yesterday, the city medical examiner ruled Tse's death a homicide, and the News notes that Anderson, who was originally charged with assault and released on bail, now likely faces homicide charges. Police sources told the tabloid that his sister may also face departmental charges.