TAMPA, Fla. \- A horrifying scene unfolded in a Tampa neighborhood late Saturday night when 19-year-old Christos Alexander allegedly shot and killed his parents before turning his weapon on responding deputies, injuring one. Hillsborough County Sheriff’s deputies were dispatched to the 14000 block of Cactus Wren Place around 11:09 PM after receiving a frantic call from a woman reporting that her husband had been shot. During the call, multiple gunshots were heard in the background. Upon arrival, deputies found the caller and the suspect, Alexander, outside the residence. Tragically, Alexander …