According to police, on Tuesday around 10:20 p.m., units responded to the area of Brook Street and Bedford Street where they observed several victims running through basketball courts with gunshot wounds.
Officers began rendering medical aid to three adult men with wounds.
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Following an investigation, police arrested 18-year-old Mekhi Thompson of Hartford on Thursday during an unrelated narcotics investigation.
He was charged with conspiracy to commit assault, assault and carrying a pistol without a permit.
Thompson is being held on a $750,000 bond.