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KUSA - One person was killed and 30 were injured in a 104-car pile up along Interstate 25 in Denver Saturday morning. Police said the victim was a female passenger in an orange car crushed by a semi-truck.

The collision occurred just before 10:40 a.m. at I-25 and Logan and stopped traffic across all lanes for nearly five hours. The highway reopened at about 3:45 p.m.

Witness Travis Rosenbloom, who was not injured in the crash, says traffic was flowing despite the low visibility when the crash happened.

"People [were] trying to hit their brakes to come to a sudden stop [and] started smashing into each other in front of me, directly to my right, and behind me," he said. "I was in the far left lane. I personally saw at least six cars smash into each other. Luckily I was over far enough to not get hit."

Drivers said by the time they saw brake lights in front of them, it was too late.

"I saw red lights, and next thing you know, I'm underneath someone else's car," said Carlos Davila.

Despite another car being stacked on top of his Subaru, he walked away without injury.

The thirty people hospitalized are both adults and children, according to Denver Health Chief Paramedic Scott Bookman.

The crash was made up of three crashes within the area of I-25 along Broadway to Logan Street.

People who were not injured were transported by RTD bus to give statements to investigators.

CDOT said the crash was the result of a "perfect storm:" fast moving snow, poor visibility and drivers going too fast for those conditions.

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