A Special Cop in Action

A Special Cop in Action originally titled Italia a mano armata is a 1976 Italian poliziottesco film directed by Marino Girolami, here credited as Franco Martinelli. The film is the final chapter in the Girolamis trilogy about Commissioner Betti, after Violent Rome and Violent Naples.

A crime syndicate starts a crime wave in Turin, they rob a bank, taking a hostage to get away from Police Inspector Betti and Ferrari, his partner. However, the hostage turned out to be their accomplice in disguise. Later, they hijack a school bus full of children to use as ransom.Betti and Ferrari sees through the syndicates scheme and ambushes them on their next robbery attempt, arresting all but one armed criminal. The remaining criminal takes one of their unarmed mules as hostage, trying the trick they used last time. However Betti sees it through and closes in on them, refusing their demands for a getaway. The armed bandit gambles by releasing all other individuals in the bank to appear genuine, however, the customer taken hostage was a career criminal known to the police and Betti. The police close in on them, forcing the crooks to give up. ........

Source: Wikipedia