Update: Malta appeals for outside help to investigate car bomb death of journalist

Latest: Malta has appealed to the FBI and to European forensic experts to help investigate the car bomb death of the country's leading investigative journalist.

Update 3.37pm: Malta has appealed to the FBI and to European forensic experts to help investigate the car bomb death of the country's leading investigative journalist.

In her crusade against corruption, Daphne Caruana Galizia, 53, took on top politicians and other powerful Maltese, including by exposing links through the Panama Papers leak.