This information is via Marcus Cohn's website. He wrote that on Saturday night around midnight, a group of 30 or so NYPD and other various officials paid a visit to the Sunburnt Cow on Avenue C near East Ninth Street. Per Marcus:
They were there for about 30 minutes and were examining everything from the menus, to the liquor license, to actual bottles of alcohol. They did not ask patrons to leave, yet most left on their own volition as their drinks ran empty. The bartenders were also made to pour out all the mixers.