By Jesse Paul, The Denver PostDenver police have surrounded an area outside of PT's Showclub in the southwest part of the city on Tuesday morning, officials said and images from a television news helicopter show. Officers arrived at the scene at about 7:15 a.m. The helicopter images showed at least nine police vehicles at the scene and officers with their guns drawn and pointed toward the strip club. A police spokeswoman said she was working to find out why officers responded to the area. Doug Schepman, a spokesman for Denver Public Schools, said Schmitt Elementary was placed on "lock out" due to police activiy in the area.