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ARVADA, Colo. -- Three people were killed and another seriously injured in a seven-vehicle crash that is suspected to have been caused by a drunk driver on Sunday night, the Arvada Police Department said.

It happened near West 61st Avenue and Ward Road around 6:15 p.m., police said.

Witnesses said a man driving a Cadillac and another vehicle started a chain-reaction accident that included a three-wheel motorcycle being driven by a man with his wife.

Witnesses told police the driver of the Cadillac appeared to be drunk.

“The guy with the Cadillac, he was the drunk driver. He gets out after killing people and was getting physical with one of the witnesses," Rick Vandenberg said.

Residents say the intersection has seen several fatal wrecks over the past 10 years but nothing has ever been done.

The names, ages and gender of those who were killed have not released.

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