Charlotte-Mecklenburg police were investigating an overnight robbery at a Harris Teeter grocery store in southwest Charlotte. Officers said someone robbed the Harris Teeter in the Steelecroft Shopping Center at South Tryon Street and Steele Creek Road around 4 a.m. Police said the robber had a crowbar and a gun and broke some glass to steal jewelry from a watch repair business inside the store, which is open 24 hours a day.