He is said to have entered the school in the 7th arrondissement with a sawn-off shotgun.

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Three men wearing balaclavas got out of the car brandishing an axe, sawn-off shotgun and handgun.

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Moat then raised the sawn-off double-barrelled shotgun and shot Mr Brown in the chest.

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Two sawn-off shotguns, a home-made stun gun and 94 rounds of ammunition were also seized in Operation Sabredale, said West Yorkshire Police.

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Moat, who was cornered in Rothbury, Northumberland last July after a week-long manhunt, was holding a sawn-off shotgun to his own head at the time.

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In July last year, the couple were found at their home in Clough Avenue, Sale, and had been shot at close range with a sawn-off shotgun.

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In the 1930s, the National Firearms Act was an attempt to curb the use of sawn-off shotguns, which had become popular with the mob during prohibition.

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Three armed men in balaclavas then emerged from the van, carrying an axe, a sawn-off shotgun and a handgun, and forced the guards to free the prisoners.

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Mohammed Rabnawaz, 25, of Devonshire Terrace, Manningham, appeared at Bradford Crown Court on Friday in connection with the seizure of the two sawn-off shotguns and rounds of ammunition.

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He had pleaded guilty to the unlawful possession of a sawn-off, 12-gauge side-by-side shotgun and two 12 gauge Eley shotgun cartridges at Ecco Road, Dundalk, on 8 August, 2010.

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