Surveillance video shows Mukwonago gas station stabbing
18-year-old Ashlyn Wierczorkowski is now charged with attempted first-degree intentional homicide.
The video shows her hiding in the aisle and attacking the man with a large knife.
The man was able to fight her off and escape the store but was stabbed in the chest and hands.
Police arrested Wierczorkowski in the store. She admitted to stabbing the man and said she had homicidal thoughts and wanted to kill someone that day in the gas station.
Wierczorkowski is scheduled to be back in court on July 26.