A violent assault sent a security guard to the hospital and turned the Apple Store in Chelsea into a crime scene Friday night over a mask policy, according to police.

Authorities say the store on West 14th Street in Manhattan closed early, around 6:30 p.m., after a customer allegedly stabbing the store’s security guard. Investigators say the attack followed the customer’s frustration with the store’s COVID-19 mask requirement.

Officers say the 37-year-old security guard was in stable condition, and the suspect fled the scene.

(Source: NBC New York)