Spectrum customers in Los Angeles and Ventura experienced a temporary outage on Sunday after someone cut the company’s fiber optic lines.

The company is offering a $25,000 reward to find the suspect. It happened early Sunday morning in the Van Nuys neighborhood of LA. Spectrum said telecommunications lines have been a target for vandalism because of the precious metals some companies use. Spectrum fiber optic lines do not contain any copper, according to the company.

“These acts of vandalism are not only a crime, but also affect our customers, local businesses and potentially emergency services,” Spectrum said in a statement.

Spectrum technicians restored service in Ventura earlier this morning. As of Sunday afternoon, crews were still working on restoring services in several areas of Los Angeles.