Police activity shut down Ga. 400 South in Alpharetta for hours Wednesday morning.

All southbound lanes were blocked about 6:30 a.m., when Alpharetta police started working a situation at the Haynes Bridge Road exit sign.

About two hours later, authorities turned southbound traffic around.

Lanes reopened just before 8:40 a.m., when police announced a safe resolution to the activity that prompted the shutdown.

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In other news: 

A police officer was injured and a suspect was shot Tuesday after police followed a vehicle believed to be involved in several car crimes, East Point Police say.??