The battle between AT&T, Google Fiber and other companies seeking to provide ultrafast Internet service over fiber networks is intensifying. The latest skirmish is taking place in Louisville.

AT&T has filed a lawsuit against the City of Louisville, seeking to overturn a new ordinance (“Ine Touch Make Ready”) that would grant Google Fiber and other companies to hang fiber from utility poles which AT&T owns.

Google (Nasdaq: GOOG) says it’s “standing with Louisville.”

AT&T, Google Fiber, Century Link and Frontier Communications are all providing and seeking to offer gigabit Internet access across parts of the Triangle.

AT&T (NYSE: T) filed the suit last Thursday in federal court. It wants a judge to clarify which authority has jurisdiction over the use of utility poles. It should be the Kentucky Public Service Commission and the FCC, the telecommunications giant said.

“AT&T pursued this course of action because the Metro Council has no jurisdiction to regulate pole attachments,” AT&T spokesman Joe Burgan told the Louisville Courier Journal. “Because of this, the ordinance is invalid.”

The ordinance was approved unanimously by the city council, which believes the measure will increase competition.

“We will vigorously defend the lawsuit filed today by AT&T. Gigabit fiber is too important to our city’s future,” said Louisville Mayor Greg Fischer.

In a blog post, Chris Levendos, director of National Deployment and Operations for Google Fiber, defended the ordinance.

“Google Fiber stands with the City of Louisville and the other cities across the country that are taking steps to bring faster, better broadband to their residents,” he wrote.

“Such policies reduce cost, disruption, and delay, by allowing the work needed to prepare a utility pole for new fiber to be attached in as little as a single visit—which means more safety for drivers and the neighborhood. This work would be done by a team of contractors the pole owner itself has approved, instead of having multiple crews from multiple companies working on the same pole over weeks or months. One Touch Make Ready facilitates new network deployment by anyone—and that’s why groups representing communities and fiber builders support it, too.

“Google Fiber is disappointed that AT&T has gone to court in an effort to block Louisville’s efforts to increase broadband and video competition. We are confident the City’s common-sense initiative will be upheld.”