PLAYA DEL REY (CBSLA.com) — One of two boats possibly involved in a collision near Dockweiler State Beach had overturned before the collision, it was reported Monday.

The incident, which unfolded about 8 p.m., prompted a search of the waters off Playa del Rey for victims or survivors.

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Aerial footage showed a lifeguard jumping into the water and joining other divers, although it remained unclear whether anyone was on board either of the vessels.

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Sky9’s Stu Mundel reported that officials planned to tow the overturned vessel into Marina del Rey.

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The circumstances leading to the collision remained unclear.