The Italian partisan who captured Fascist dictator Benito Mussolini at the end of WWII has died .

Urbano Lazzaro, whose 'nom de guerre' was Bill, died Tuesday night in a Vercelli hospital aged 81 .

Lazzaro, a member of the partisans' Garibaldi Brigade, took Mussolini off a truck at Dongo near the Swiss border on April 27, 1945 .

The dictator, who ruled Italy for over 20 years from 1922, was disguised as a German soldier .

Mussolini was trying to flee to safety after Italy's defeat in the war and the collapse of his puppet regime in northern Italy .

The partisans shot the dictator the day after they caught him .