A squirrel left more than 45,000 customers across San Diego without power for several hours Tuesday, according to San Diego Gas and Electric (SDG&E).

Residents from San Diego's University Heights to North Park to Normal Heights to Old Town and Kensington neighborhoods were without power from 12:30 p.m. to 1:30 p.m., according to SDG&E spokeswoman Helen Gao.

A substation is currently down and we are working hard to repair. Thank you for your patience. — SDG&E (@SDGE) July 25, 2017

The squirrel came in contact with a high voltage transmission line, leaving the entire substation shut down, Gao said.

Power was restored around 1:30 p.m., officials said.

A map of the outages is available on the power company's website.