SAN FRANCISCO (KRON) – The San Francisco Department of Public Health closed an In-N-Out Burger store last week because employees did not properly check customers’ vaccination documents, the burger chain said in a statement.

In-N-Out said it correctly displayed signs indicating local vaccination requirements, but refused to strictly enforce them.

“We refuse to become the immunization police for any government,” said Arnie Wensinger, legal and commercial director of In-N-Out. “We strongly disagree with any government dictate that requires a private business to discriminate against customers who choose to patronize their business.”

Since August, San Francisco has required proof of vaccination before people can enter certain indoor businesses, including bars, restaurants, gyms and major events. Los Angeles, home to many In-N-Out locations, has similar guidelines that go into effect November 4.

The restaurant, located at Fisherman’s Wharf in San Francisco, has since reopened, but dining inside isn’t available. It is the only In-N-Out location in San Francisco.

Nexstar’s KRON has contacted the city’s health department for comment, but has not received a response at the time of posting.

According to the latest city data, 83% of eligible residents ages 12 and older are fully immunized in San Francisco.