The Chicago PD says the crash investigation involving a Porsche registered to Lance Briggs is now officially closed -- and the NFL star WILL NOT be arrested or charged with a crime.
We broke the story ... the Porsche was found smashed into a bartending school on the morning of January 20th -- and no one seems to know how it got there or who was driving.
When cops arrived, there was no driver on scene. Cops would not say if Briggs was involved in the crash ... but TMZ Sports has confirmed the car is registered to the ex-Chicago Bears linebacker.
Cops looked into the crash and ultimately determined it was a "regular auto accident" -- not a hit and run -- and therefore a civil matter.
We spoke with Officer Sedezic who confirms the case is officially closed, the civil matter has been resolved -- and no tickets will be issued.
Sources with close knowledge of the case tell us ... someone did come forward claiming to be the driver -- an associate of Briggs -- and that person settled the matter through his insurance company.
As for Lance, we reached out to him about a billion times -- and briefly spoke with him on the phone before publishing this story -- but he refused to comment.
He did however tweet about the situation on the day of the accident -- saying he "Ubered home" -- but never explained how his car ended up in the front of a bartending school.
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