UPDATED at 11 a.m.: The Google Barge is expected to dock at the Port of Stockton by late morning Thursday, port director Richard Aschieris said.

Sacramento TV station KCRA posted a photo as the mystery barge arrived in Stockton.

The barge was forced to leave its Treasure Island roost because it didn’t have the proper permits to stay. It was rumored to be heading to Stockton, but Aschieris said he didn’t know for sure until he received a call from his staff about 2 a.m. Thursday.

The four-story barge sailed away in the early morning darkness toward Stockton.

Google’s representatives agreed to pay between $10,000 to $12,000 per month for a six-month lease of a pier next to port warehouses on Rough and Ready Island, Aschieris said.

Google agreed to a minimum three-month lease, but the lease could extend beyond six months.

“This is a very unique visitor, it’s a unique vessel and we’re so pleased to have it,” Aschieris said.

The San Francisco Bay Conservation and Development Commission told Google to leave its berth at Treasure Island because the barge didn’t have the required construction permits to remain. Stockton is outside of the commission’s jurisdiction.

Google is keeping its plans for the barge shrouded in mystery. The rumors include a high-tech computer eyewear store, a data storage center and a party boat.

Aschieris said Google did not disclose details of its plans to the port, which he said is typical for some of the maritime construction work done at his facility.

“Some disclose what the project is, some people do not,” he said. “Our focus is to provide a secure facility.”

– Ellen Huet and Benny Evangelista