A Poplar Bluff man is in custody after attacking an officer at Walmart. Police say that on Tuesday afternoon, officers investigated a shoplifting complaint at Wal-Mart. The suspect, Sheldon Smith provided a false name and birthday to officers. While being arrested, Smith attacked Corporal Dusty Johnson, attempting to knock him down. Johnson was able to gain control and take smith into custody. He is charged with 2nd-degree assault on a law enforcement officer, stealing, resisting arrest, identity theft, and several municipal warrants.