Updated on July 7 at 10:06 a.m.

Montgomery County officials have shut down, cited or warned four businesses for not adhering to coronavirus restrictions, including two hookah lounges and one restaurant whose owner appeared to willfully defy mask requirements.

Inspectors received multiple complaints from customers at one Gaithersburg restaurant, the Grille at Flower Hill, where employees were not wearing masks and customers were not properly distanced. The first complaint was on June 29, and health inspectors visited the establishment on July 2. They issued a warning and reminded the owner that masks are required in public. More customer complaints came in after the warning.

In a Facebook post, now deleted, the owner lashed out against patrons who had complained. “Let me be very clear … my staff will not wear face masks while working here at the Grille,” the owner wrote, according to NBC4. “If that bothers you then please dine elsewhere and please try to find something more important to occupy your time such as volunteer at a nursing home or soup kitchen.”

The owner told the station in an interview he did not want to be identified because he had received death threats. He said he was against masks because he believed they were unhealthy and uncomfortable.

The restaurant’s Facebook post had more that 800 comments, as of Tuesday morning, the vast majority of them harshly critical of the decision not to use masks. “If you think I would eat at an establishment that puts its employees and MY health at risk you’ve got another thing coming,” wrote Heidi Gettman. “Are you crazy?!!!” The grille was closed Monday morning, but NBC4 reported county officials say they didn’t force it to close.

County staff visited 1,900 businesses in recent weeks to inform them of restrictions as the county reopens, and to answer any questions. Over the holiday weekend, inspectors returned, visiting businesses in Wheaton, Rockville, Silver Spring and Bethesda.

Inspectors shut down two hookah lounges, which are not allowed to open during the county’s Phase 2 of reopening. Vibes Hookah Lounge in Rockville and Cabana Hookah Lounge in downtown Silver Spring were both in operation in violation of restrictions, according to county officials.

The Palisades Lounge in downtown Silver Spring was cited and closed for not maintaining adequate physical distance among patrons.

County Executive Marc Elrich said in a statement that “the overwhelming majority” of businesses in Montgomery County are following the rules. “Businesses will stay open provided they follow the public health guidelines. If they choose to ignore public health guidance, we will shut them down.”

This article was updated to clarify that the Grille at Flower Hill was closed Monday, but county officials say they didn’t force it to close.