Verizon says that it has resolved issues with Fios, its fiber-optic network, that affected many locations in the Northeastern US for hours on Tuesday. The company says things should be returning to normal, but a fiber cut in Brooklyn may mean that some might still be without service.

Users began reporting problems with Verizon on Downdetector shortly after 11AM ET, and the volume of reports peaked at more than 22,000 on Tuesday. Hotspots for problems on Downdetector’s outage map for Verizon included Boston, New York City, Washington, DC, and more. A few ThinkAuthority staffers experienced outages as well, though one in Brooklyn still doesn’t have service.

“An internet issue impacting the quality of our Fios service throughout the Northeast has been resolved,” Verizon said via its support account on Twitter to many users on the platform. “Network performance and service levels are returning to normal.”

The account also said at 11:52AM ET that there was a fiber cut in Brooklyn, and as of 4:04PM ET on Tuesday, the company said the cut is still affecting customers in the area. However, technicians are working to fix things, Verizon said.

People also reported issues with Google, Zoom, Gmail, and more on Downdetector, but the reports appear to have come from the same places that were experiencing problems with Fios. Google and Zoom’s status pages aren’t showing any outages, so it’s possible problems with those services in the Northeastern US were tied to the Fios outage.

We’ve asked Verizon to comment, and the company says it’s looking into it now. Acting Federal Communications Commission chairwoman Jessica Rosenworcel also said that the Public Safety and Homeland Security Bureau is looking into the situation.