The restaurant chain, which sells Mexican-style cuisine, posted an image it said had clues to a new location.
The image featured such Dunedin landmarks as Baldwin St, Larnach Castle and St Paul’s Cathedral.
Restaurant Brands, which owns the Taco Bell brand, did not respond to requests for comment yesterday to confirm the location of the potential eatery.
Online rumours suggested a site could be at 644 Great King St, which previously housed a Coupland’s Bakery outlet.
Colliers leasing agent Dean Collins confirmed the building had been leased, but he was not able to confirm the identity of the lessee.