Internet and cable provider Spectrum has reported outages in Los Angeles are “caused by a criminal act of vandalism,” according to a company post Sunday on X.

The most common user issues have been total blackouts, landline and internet problems, and no signal. The outage has affected neighborhoods surrounding Los Angeles, such as North Hollywood, as well as in the Orange County cities of Anaheim and Santa Ana.

More than 25,000 Spectrum users in the Los Angeles area reported issues on DownDetector.com, which tracks outages. Users self-report to DownDetector, so it may not represent the full scale of outages.

Users began reporting issues to DownDetector at 3 a.m. Pacific Time, with more reports spiking around 8 a.m. and 1 p.m.

Spectrum acknowledged customer concerns at 2:13 p.m. PT in a post on X, saying, “We are currently working on a Fiber cut affecting the Los Angeles area. We are sorry for the inconvenience this has caused. Thank you.”

Spectrum did not immmediately responded to CNN’s request for comment.

Customers in Kansas City experienced a similar outage last month, when Spectrum reported two fiber cuts — one that the company credited to a criminal act of vandalism and another caused by a third-party network, which should have provided backup to the Spectrum network, according to local reports. Spectrum had offered a $25,000 reward for information leading to the arrest of the alleged vandals.

Spectrum operates in 41 states and serves more than 57 million homes, according to the company’s website.