FOUNTAIN VALLEY (CBSLA) — One person was killed in a crash early Friday morning on the northbound San Diego (405) Freeway in Fountain Valley.

The crash happened at about 1:15 a.m. on the 405 at Brookhurst Street, according to the California Highway Patrol.

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It’s not clear how many vehicles were involved, but a Mercedes was reported to have crashed into an embankment and the twisted wreckage of the vehicle was left on its roof. Debris was scattered over three lanes.

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The crash which blocked three right lanes, including the on ramps to the 405 Freeway at Brookhurst Street, remains under investigation by the CHP.

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(© Copyright 2018 CBS Broadcasting Inc. All Rights Reserved. City News Service contributed to this report.)