TULSA, OKLA. ? A downtown water main broke Monday afternoon, flooding an underground electrical vault and knocking out power to major buildings, including the headquarters of the Tulsa World newspaper and the Bank of Oklahoma tower, utility officials said.

The power outage, which occurred about 2:20 p.m., affected 130 customers, said Stan Whiteford of the Public Service Company of Oklahoma, the electrical utility for the area. Many of the customers affected were large businesses.

Power could be restored within hours if electrical circuits merely tripped off when the water came in, or it could be a more lengthy outage if power cables were severely damaged or burned, Whiteford said.

Tulsa public works crews were still pumping water out of the electrical vault Monday afternoon, so it was difficult to tell the extent of the damage.

“There are a ton of emergency vehicles,” Whiteford said. “There was a river of water running down Second Street.”

There were no reports of injuries.

City spokeswoman Kim MacLeod said freezing weather and dry soil caused ground shifts that were likely to blame for the water main break. This was the largest of about 20 recent water line breaks throughout the city, she said.

She said 10 downtown buildings would be without water service until about 10 a.m. today.

Other companies affected by the power outage included the Crowne Plaza hotel and the Williams Cos., MacLeod said. Guests were leaving the hotel.

No hospitals were affected.

The Tulsa World newspaper scrambled to produce its Tuesday morning editions.

Editors and reporters were working from suburban offices that normally were responsible for zoned editions of the paper, Managing Editor Susan Ellerbach said. Ellerbach said the World planned to produce at least a 12-page edition for today, a substantial reduction from the newspaper’s normal size.