An In-N-Out Burger employee in Idaho was among the three people killed in a Saturday shooting at the fast-food chain restaurant, according to its owner.

“My heart is broken, my chest is heavy, my eyes burn from the tears I’ve shed,” In-N-Out owner Lynsi Snyder said in a statement early Sunday morning. “We lost one of our beautiful Associates tonight. She was taking care of our most important asset — our Customers, and her life was taken by a disgusting human who doesn’t value the lives of others or his own.”