Elephant Bar has closed four of its eight Bay Area restaurants, a company manager confirmed Sunday, leaving baffled customers driving through empty parking lots over the weekend.

The locations that have been shuttered are Campbell, Cupertino and Dublin. No reason was given for the closings, and because the corporate headquarters is closed on Sundays, calls went unanswered. The Concord location was closed in September.

Two upper Peninsula locations (Daly City/Serramonte, Burlingame) and two East Bay locations (Fremont, Hayward) remain open.

The chain, founded in 1980, had been known for years for its Asian-inspired menu, safari-themed decor, tropical cocktails and its group- and party-friendly atmosphere. Recent changes added more Americana dishes to the menu.

A ninth Bay Area location, Emeryville, had suffered a kitchen fire in December 2015. The chain later closed that eatery.

In 2014, after a bankruptcy filing, the company closed 16 of its restaurants, including those in Stockton, Modesto, Simi Valley, Valencia and Northridge, according to news reports that year. At the time, a spokeswoman at the then-Costa Mesa-based parent company said there wasn’t enough business to keep those locations open.

A father-son duo, Dan and Chris Nancarrow, opened the first Elephant Bar in 1980 in Lubbock, Texas, according to the Ventura County Star.