LOS ANGELES (CBSLA) — A Wednesday afternoon power outage knocked out electricity to a portion of downtown Los Angeles, including the Convention Center.

According to the Los Angeles Department of Water and Power’s Twitter account, a construction mishap was to blame for the roughly four-hour outage.

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According to spokesperson Jessica Johnson, about 30 DWP customers, including the Convention Center, which is hosting the 2019 Electronic Entertainment Expo, lost power.

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Some of the affected customers could include other large facilities such as hotels, but no specifics were available, Johnson said.

According to a Los Angeles Fire Department dispatcher, crews responded to two elevator calls in the area.

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(© Copyright 2019 CBS Broadcasting Inc. All Rights Reserved. City News Service contributed to this report.)