Boston Police tweet a man was shot at Bowdoin and Westville streets in Dorchester this morning. He has since died. The Globe reports the Marshall School went into lockdown mode as police looked for the shooter.

A 29-year-old man died this afternoon after being shot in the head in his apartment at 598 Harvard St. Police are looking for two suspects.

More to come.

Boston Police report four people were shot around 3:50 a.m. at 7 Edson St. Carl Hentz Belizaire, 21, of Mattapan, was pronounced dead at Brigham and Women's Hospital. The other three victims - a man, 26, a man, 40, and a woman, 19 - are all expected to survive.

Belizaire is Dorchester's 17th murder victim of 2009 and Boston's 40th. Police say he was the intended victim; the other three people were just in the way.

The Herald reports that around 5 a.m., a man involved in a large fight outside a party at 98 Intervale St. whipped out a machete and began slashing: Four people were injured, but are expected to survive.

UPDATE: Arrest made.

UPDATE: Boston Police identify her as Paola Castillo, 18, of Dorchester and say "this was not a random incident and the victim is believed to have been targeted."

Channel 4 reports the 18-year-old apparently got into an argument with some people who crashed her birthday party at 28 Hillis Rd. around 2:30 a.m. and that one of the crashers shot her dead.

Boston Police report finding a 19-year-old with a gunshot wound inside the Dorchester Y, 776 Washington St., around 11:40 p.m. Saturday.

He was taken to Boston Medical Center where he was pronounced dead. He is Dorchester's 16th murder victim this year (see map).

About two weeks ago, a Friday-night party at the Egleston Square Y's Youth Center turned into a near-riot, according to police.

Boston Police tweet two people were shot on Norwell Street tonight. One's dead, the other is in critical condition.

This is Dorchester's second murder in two days.

Boston Police report the victim, in his late teens, was found shot at 25 Glenarm St. around 10:45 p.m. on Monday and was taken to Boston Medical Center, where he died.

Boston Police report finding a man down on Horadan Way with stab wounds shortly after midnight today. The man, 19 and Hispanic, was pronounced dead at Brigham and Women's Hospital.

UPDATE: The victim, Jose Alicea of Hyde Park, has died.

The second violent incident in less than a month outside Club 33, 33 Stanhope St., left one man in critical condition and 12 men under arrest early this morning, Boston Police report.

Channel 4 reports the bodies were found in a car at 175 Clare Ave., off Hyde Park and American Legion.