King Soopers has filed a temporary restraining order against union workers, accusing picketers of harassing customers amid a strike across over 70 Denver metro area grocery stores.

Kim Cordova, president of the United Food and Commercial Workers Local 7, has said staffing is one of the major issues for employees.

Some 10,000 grocery store workers across the greater Denver area went on strike Thursday, claiming unfair and illegal negotiating practices by King Soopers while their union has been negotiating a new contract with the store chain.