By CBSLA Staff

RIALTO (CBSLA) — Two people were killed in a crash in Rialto overnight Sunday.

The crash unfolded just after 3:45 a.m. on the eastbound lanes of the 210 Freeway between Alder Avenue and Ayala Drive.

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It was there that two cars collided, both of which then overturned.

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The crash spurred the closure of two lanes on the thoroughfare.

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The cause of the crash remains under investigation.