Boston Blotter: Shootings in Dorchester, Roxbury

-- Two men were found shot last night in Dorchester, one fatally. The dead man was found slumped over a steering wheel; the other victim was found outside the car, with a gunshot wound to the head that sent him to Boston Medical Center, where he remains in critical condition. Both victims were in their 40s. [BPDNews, Globe]

-- In an unrelated incident, police found two men, also in their 40s, suffering from multiple gunshot wounds in Roxbury. Both victims sustained non-life-threatening injuries. [BPDNews]

-- Boston police arrested a suspect in the 2007 murder of Dwayne Graham on board a MBTA bus. [BPDNews]

-- Somerville cops say that they stymied a group of machete-wielding bicyclists. [Somerville Journal]

-- A pair of thirtysomethings were robbed at gunpoint by a group of teens on Blackstone Street in Cambridge, according to police. [Cambridge Chronicle]

All charges alleged until proven under law.