Bomb Squad in Mentone

A vintage fire extinguisher was the cause of a bomb alert in Mentone Terrace.  Electricians discovered a football sized container in the attic of a flat there.   More details in the article here which states:

The Selfac fire deterrent, believed to have been manufactured in 1941, is basically a cardboard canister holding bicarbonate of soda and a central explosive charge. Hung in roof spaces, they were deployed to contain blazes by dispersing fire retardant powder over the flames having been triggered by intense heat.