Sienna Plantation (WBAP/KLIF) – A deputy constable was shot and killed early Friday morning in Fort Bend County’s Sierra Plantation subdivision, south of Houston. Fort Bend Sheriff Troy Nehls says the constable was shot by a deputy while the two of them, and two other deputies were checking the security inside an unlocked, vacant house. Sheriff Nehls says the deputy thought the constable was a prowler. Sheriff Nehls says the Texas Rangers have been brought in to lead the investigation, but early indications are there was no prowler; the back door of the house was just unlocked.