The city held a takeback event on Saturday for residents to turn in fireworks anonymously, no questions asked. The event was held at a city fire station.
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In March of this year, a home was rocked by explosions caused by a massive cache of illegal fireworks. Two cousins were killed in the blast and subsequent fire.
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Many homes were damaged by debris and flames and residents had to be evacuated as the bomb squad worked to clear the site and dispose of unexploded material. Investigators removed dozens of barrels of unexploded fireworks.
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Saturday's event was aimed at protecting residents as the July 4 holiday approaches.
"We wanted to add more components where people can get rid of fireworks," said Dan Bell, a spokesman for the city of Ontario. "We want them to drop them off, insteads of light them off."