SANDY SPRINGS, Ga. - A second person has been arrested in connection with a weekend crash that left a Sandy Springs police officer seriously injured, officials said.

What we know:

Police said investigators on Tuesday arrested David Anthony Hightower, charging him with racing, reckless driving and serious injury by motor vehicle. He was booked into the Fulton County Jail.

Hightower is the second person charged in the case. Riad Ahmen was arrested after following the crash.

The backstory:

The collision happened just before 10:25 p.m. Saturday on State Route 400 northbound, just north of Hammond Drive. Police said the officer had been investigating a single-vehicle crash when Ahmen, riding a motorcycle, lost control at an estimated 100 mph.

The motorcycle struck both the officer and

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