A 7-Eleven shopper in Washington State relied on his concealed carry firearm over the weekend to subdue a man who attacked customers and staff with a small ax.

Just before 6 a.m. Sunday, a masked man entered a convenience store in Seattle and "began swinging a hatchet at both the customer and the store clerk," before attacking the cashier, reports KOMO News.

"We don't know if the intent was to commit a robbery because the suspect didn't say anything," King County Sheriff's Sergeant Cindi West said.

Luckily, an armed store patron was sitting and having coffee at the exact moment the ax-wielding suspect entered.