Kianna Underwood, a former child star on Nickelodeon, was killed in a tragic hit-and-run incident this week. She was 33. The Deputy Commissioner of Public Information confirmed to Page Six that police responded to a 911 call in the Brownsville neighborhood of Brooklyn, New York, at around 6:49 a.m. on Friday. The New York Police Department told People that Kianna was crossing an intersection when a black Ford SUV hit her. She was then "subsequently struck by a black and gray sedan," per the authorities.