Two Boston lawmakers are demanding a “full investigation” into a police radio failure in the midst of multiple shootings and stabbings on Sunday night, as the department insists the radio issue didn’t cause any subsequent problems in its officers’ responses.

Four shootings and a stabbing happened at separate locations across Dorchester over a three-hour span, from 11:56 p.m. Sunday to nearly 3 a.m. Monday, injuring five people, according to Boston police. All five were hospitalized. As of Tuesday, police have not publicly linked the incidents or announced any arrests.

But the day after the violent incidents, city councilors brought to light that the Boston police radio system experienced a “failure” on Sunday night — and contended it’d impacted officers’ abilities to respond to the cri

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