It appears Upper Crust Pizza in Salem has closed, according to signs posted on the front door of the Washington Street business.
A reason for the closure was not immediately available. The business was in operation as recently as last week.
On Feb. 17, Twitter user Andy Seidel tweeted "RIP upper crust Salem." Since then, other Salem-based tweeters have acknowleged the closure.
On Sunday morning, the Salem location was still listed on the company website.
In June of 2011, the company was ordered to pay $80K in back wages as well as liquidated damages for 11 employees after the U.S. Department of Labor's (DOL) Wage and Hour Division found multiple violations in the handling of overtime pay and record keeping.
Salem Patch will bring you more on the closure as it becomes available.