In-N-Out Burger violates vaccine mandate, prompting the restaurant's closure.

SAN FRANCISCO, CALIFORNIA (KRON) — The San Francisco Department of Public Health closed one In-N-Out Burger outlet last week, the burger business claimed in a statement, because employees were not properly checking for customers' immunization proof.

In-N-Out asserted that it posted notices of local immunization laws lawfully but has refused to strictly enforce them.

"We will not become a government's vaccine police," In-N-Out Chief Legal & Business Officer Arnie Wensinger stated. "We are vehemently opposed to any government mandate compelling a private business to discriminate against customers who choose to patronize their establishment."

Since August, several indoor establishments in San Francisco, including bars, restaurants, gyms, and large events, have demanded proof of immunization. Los Angeles, which is home to numerous In-N-Out outlets, will implement identical guidelines beginning Nov. 4.

The restaurant on San Francisco's Fisherman's Wharf has now reopened, however indoor dining is currently unavailable. It is San Francisco's only In-N-Out location.

Nexstar's KRON attempted to reach out to the city's health department for comment but did not receive one at the time of publication.

According to the city's most recent data, 83 percent of eligible citizens aged 12 and over are completely immunized.