LOS ANGELES (CBSLA) – Police and federal agents are investigating a photo posted online by an ISIS-supporting group that showed an explosion at a downtown Los Angeles high-rise.

The photoshopped image shows a blast at the top of the AON Center, located at 707 Wilshire Blvd., with a man in a uniform with his face hidden, carrying an ISIS flag. The 62-story AON Center is the third-largest building in Los Angeles.

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LAPD said it was aware of the image circulating on social media.

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Police encouraged residents to report anything suspicions by calling 877-284-7328.

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