TORRANCE (CBSLA) — Email accounts and servers on computer systems at the City of Torrance were impacted early Sunday due to alleged cyber attack, according to officials.

The incident happened at around 2:30 a.m., a news release says.

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City officials said safety operations still have access to communication but that certain city business services were compromised as a result.

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They also said no “public personal data” was impacted.

Cyber experts are investigating the source of the attack.

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Torrance leaders said city libraries will remain open during regular business.