BOSTON, Dec. 8, 2010—Boston Police Commissioner Edward Davis and Suffolk County District Attorney Daniel F. Conley today announced the arrest of EDWARD WASHINGTON (D.O.B. 3/28/79) of Dorchester in connection with murders of four people in Mattapan earlier this year.

Members of the Boston Police Fugitive and Apprehension Unit arrested Washington this afternoon and he is being charged with him with four counts of murder, one count of armed assault with intent to murder, home invasion, armed robbery, and unlawful possession of a firearm. He is expected to face arraignment on those charges tomorrow morning in Dorchester District Court.

Washington is the cousin of KIMANI WASHINGTON, who is currently held on $500,000 cash bail on gun and drug charges stemming from the Sept. 28 shooting deaths of Levaughn Washum-Garrison, Simba Martin, Eyanna Flonory, and her 2-year-old son, Amanihotep Smith on Woolson Street.

Boston Police arrested Kimani Washington on Oct. 2 in Manchester, New Hampshire. Boston Police arrested a second man, DWAYNE MOORE, on Nov. 22; Moore is charged with four counts of murder and an additional count of armed assault with intent to murder for the shooting of a fifth victim who remains in critical condition. He is currently held without bail.

The arrests come amid an ongoing investigation on the street and behind the closed doors of the Suffolk County Grand Jury. In light of that ongoing investigation, officials are unable to comment further on the arrests.

Investigators urge anyone with information on the slayings, no matter how insignificant or peripheral it may seem, to call the Boston Police Homicide Unit at 617-343-4470.