Dan Egar helps a customer shop for a handgun on February 13, 2014 in Tinley Park, Illinois
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Missouri gun murders 'rose after law repeal'

Researchers claim a new study provides some of the most compelling evidence yet for tighter gun controls in the US.

The team followed the consequences of the State of Missouri repealing its permit-to-purchase handgun law in 2007 which required purchasers to be vetted by the local sheriff and to receive a licence before buying a gun.

Prof Daniel Webster, director of the Johns Hopkins Center for Gun Policy and Research, told the BBC repealing the law "had a very immediate and profound impact on lethal violence."

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