Modern-day downtown Oakland speakeasy raided

Bottles of liquor are displayed behind the counter at the Tempest bar and restaurant in San Francisco, Calif. on Tuesday, March 12, 2013. Sen. Mark Leno is introducing a bill in Sacramento that would allow bars to serve alcohol until 4 a.m. less Bottles of liquor are displayed behind the counter at the Tempest bar and restaurant in San Francisco, Calif. on Tuesday, March 12, 2013. Sen. Mark Leno is introducing a bill in Sacramento that would allow bars ... more Photo: Paul Chinn, The Chronicle Photo: Paul Chinn, The Chronicle Image 1 of / 1 Caption Close Modern-day downtown Oakland speakeasy raided 1 / 1 Back to Gallery

An underground after-hours club in downtown Oakland was busted and its operators arrested for selling booze without a license and possessing drugs, officials said Thursday.

The crackdown on Studio 361 came after authorities received multiple complaints from neighbors about loud music late into the night, illegal alcohol sales and drug use at the basement club.

A months-long undercover investigation by the California Department of Alcoholic Beverage Control and Oakland police culminated with a Nov. 6 raid at the rogue establishment at 361 12th St., officials said.

Two operators of the club — identified as Everett Alfonsa Herbert, 48, of Alameda and Tuvai Gedion Sua, 37, of Pittsburg — were arrested, cited and released the night of the raid. At least 72 bottles of liquor were confiscated as well as a “significant amount” of beer and wine, state officials said.

Agents also seized about $400 in cash from behind the bar, which officials said offered “a disc jockey, a dance floor and several smoking rooms for its patrons.”

Several baggies with suspected narcotics were found after the raid, and officials suspect they may have been ditched by customers as agents burst into the club.

Undercover agents had gone to the establishment on numerous occasions prior to the raid to confirm the illegal activity, officials said.

State officials believe the club was primarily promoted as an after-hours alternative to legitimate bars in the area, which are required to close at 2 a.m. The spot was advertised on various social media channels, officials said, though a Twitter account that appeared to be associated with the club hadn’t been active since it tweeted out information for a New Year’s Eve party in 2012.

Kale Williams is a San Francisco Chronicle staff writer. E-mail: kwilliams@sfchronicle.com Twitter: @sfkale