Authorities said an unknown number of vehicles crashed in unclear circumstances.

Jacksonville, FL. – One person was severely injured following a traffic collision on Friday night in Jacksonville near the Duval and Clay County line, according to the Jacksonville County Sheriff’s Office.
The accident happened on January 2nd on Blanding Boulevard at Youngerman Circle.
Authorities said an unknown number of vehicles crashed in unclear circumstances.
One adult was severely hurt and was rushed to the hospital with life-threatening injuries.
All lanes were blocked as of 9:50 p.m.
Further details regarding this crash were not released.
An investigation is ongoing.
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