The San Francisco Department of Public Health is investigating reports that several people who ate at the House of Prime Rib restaurant became ill, including several new complaints filed as recently as Monday.
The iconic Van Ness Ave. restaurant’s Instagram account posted on Tuesday they "had an isolated issue" with some of their prime rib "which was immediately discovered and addressed. In that regard, we remain committed to the highest level of quality and service for our customers."
The issue started last month when several customers posted complaints to social media that they got sick after eating at the restaurant, as reported by the San Francisco Chronicle.
Owner Joe Betz told the paper that his team has been trying to figure out what might be causing diners to fall ill, adding that "none of the employees who eat the prime rib every Saturday have gotten sick."
The restaurant has been jammed since reopening for indoor dining.
The city’s health department received six complaints of foodborne illness and inspected the business on April 7, finding only two "lower risk violations."
According to the paper, a meat grinder with food debris was immediately cleaned and sanitized. The menu also lacked an advisory warning that certain raw or undercooked foods such as meat or eggs may increase risks of foodborne illness, city inspectors said.
But on Monday, the health department received four more complaints from a total of 12 people. They’re currently under review.
The restaurant has been refunding customers for meals they claimed got them sick.