OLATHE, Kansas (AP) — A 38-year-old man faces a murder charge in the traffic death of a Johnson County deputy.

Adrian Espinosa-Flores, of Kansas City, Kansas, is accused of driving drunk on September 11 when authorities say his pickup truck slammed into the patrol vehicle of Master Deputy Brandon Collins in Overland Park. The deputy was stopped, conducting a traffic stop, when the crash occurred.

Espinosa-Flores was initially charged with involuntary manslaughter.

The Kansas City Star reports that Johnson County prosecutors on Thursday filed an alternative charge of reckless second-degree murder against Espinosa-Flores, who’s being held on $2 million bond.

A lawyer listed for Espinosa-Flores didn’t immediately return a call seeking comment Thursday.