A gas station in Lake Station has been robbed twice in the past week. Shortly after noon Tuesday officers responded to Rich's Gas Station in the 43-hundred block of Central Avenue, where a male subject armed with a handgun was reported to have entered the business, demanded money, then fled on foot. As a precaution, Polk and Bailly Elementary Schools and the Lake Station Boys and Girls Club were placed on lockdown while officers from Lake Station, Hobart and Portage searched the area. Lake Station Police say they have two teenage suspects in the armed robbery that occurred April 2nd at the same gas station. Investigators say they also believe both juveniles are responsible for at least one other armed robbery, which occurred in Porter County.