 A desperate manhunt underway in Texas for the suspect who shot and killed a Harris County Sheriff's deputy in Houston. Here's ABC's Chief Justice Correspondent Pierre Thomas. 44-year-old Ronnie Palmer is considered armed and dangerous, identified as a person of interest in the shooting of Deputy Fernando Escueda. Authorities say it all started at Little Caesars Pizza Restaurant. Authorities believe Palmer became upset with an employee when his pizza order was wronged.