WEST PALM BEACH, Fla. (AP) — An off-duty Palm Beach County sheriff's deputy will not face charges for allegedly running a stop sign while speeding and crashing into a car, critically injuring a teenager.

The Palm Beach County State Attorney declined to charge Michael D'Avanzo for the July crash in Delray Beach that injured 18-year-old Farrah Fox.

Investigators say the Palm Beach County deputy was driving 53 mph (85 kph) in a 25 mph (40 kph) when his pickup ran the stop sign and smashed into a truck carrying Fox. The University of Central Florida aeronautics engineering student was comatose for a month and remains in rehabilitation.

Prosecutors said Thursday the stop sign was blocked by a low-hanging tree and drivers traveling at or above the speed limit would not have seen it. D'Avanzo remains on duty. Fox's family declined comment.

