Boston Blotter: 4 Killed in Dorchester, 1 in Mattapan

-- It was a bloody weekend in Boston. Four people were killed in two shootings Saturday night and early Sunday morning in Dorchester. The first shooting, on Ogden Street, claimed the life of 26-year-old Okwudill Onujiogwie, whom police found shot dead shortly after 8 p.m. The second shooting, on Mount Ida Road, claimed three, Anthony Perry, 19, of Boston, Shacora Gaines, 20, of Brockton and Chantal Palmer, 20, of Brockton, who were sitting in their car outside of a party. A fourth passenger survived the attack. Police have announced no leads in either case, but the mayor's spokeswoman Dot Joyce said that "Boston police plan to monitor social websites, such as MySpace, more closely to look for the advertisement of parties." [Globe, BPDNews]

-- Three men were shot on Granfield Avenue in Roslindale Friday night, one of whom suffered a bullet to the head that grazed him from eye to ear. [Roslindale Transcript]

-- A 23-year-old Milton man allegedly stabbed two of his little sisters to death with a kitchen knife and stabbed a third before police killed him with gunshots. [Globe]

-- Boston police raided two different residences on Edgemere Road in West Roxbury to serve two different search warrants over the course of two days this weekend. The raids allegedly turned up a small arsenal of guns and several hundred grams of crack. [Roslindale Transcript]

-- A Somerville detail cop saved the life of a dying 3-year-old last week. [Somerville Journal]

-- Max became a Somerville police dog. [Somerville Journal]

All charges alleged until proven under law.