MONTGOMERY COUNTY, Pa. (CBS) – The woman charged with killing a firefighter and injuring three other first responders was mixing alcoholic drinks behind the wheel at the time of the collision, according to an arrest report obtained by CBS3.

Jacquelyn Walker, 63, of Little Egg Harbor, NJ, was charged Saturday with vehicular homicide for the crash on Schuylkill Expressway. Belmont Hill Fire Company firefighter Thomas Royds died after the crash, leaving behind three children.

READ MORE: PPA Adding Patrols To Monitor Illegally Parked Cars In Bike Lanes Amid Growing Number Of Bicyclists Killed In Philly

According to the arrest affidavit from the Montgomery County District Attorney’s Office, Walker was outside her car after the crash saying, “Oh my God, oh my God,” repeatedly. The document says she was shaken up; the officer writing the report noted she smelled like alcohol and had slurred speech.

READ MORE: Father Of 18-Year-Old Killed In Sand Collapse On Toms River Beach Shares Message Remembering Son

Another officer watched as Walker dumped “a brown liquid out onto the road” near her car. A later search of her Jeep revealed an empty rum bottle.

During a later conversation, Walker told authorities she purchased the liquor prior to the crash and mixed it with soda. She initially told officers she thought the crash happened around 5 p.m., but authorities say Walker crashed into the group around 3:10 a.m.

MORE NEWS: Dirt Bike Rider Wanted In Hit-And-Run That Left Teenager Dead, Philadelphia Police Say

Earlier today, a procession was held to honor Royds as officials moved his body to a Lower Merion Township funeral home.