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(NECN: Josh Brogadir, Boston) - This street is just two blocks from the beach, and has been an active crime scene for most of the day.
And it hasn't let up.
The open window is where the attack happened.
This is right next door to a school, which fortunately was not in session due to the holiday.
"There's a manhunt going on right now," said Sen. Jack Hart, Democrat of South Boston.
That manhunt continues through the evening, as police remain inside the first floor of this three story house on East Seventh Street in South Boston.
It was 10 a.m. when a 67-year-old woman was attacked in her home.
Neighbors tell us her name is Barbara Coyne.
She was stabbed, then rushed to Boston Medical Center where she later died.
It is a crime that has shocked this neighborhood.
"She was just a wonderful person, and she doesn't have an enemy at all, I just don't know why anyone would go in and hurt her," said Pearl Baika who has known Coyne for years - and says she lived with her adult son.
She is related to former Boston Police Commissioner Paul Evans and two South Boston politicians know the Coyne family well, too.
Representative Nick Collins and Senator Jack Hart arrived at the crime scene - extremely upset to learn the details of what happened.
"It's a brazen move by this young kid as we understand it. So we don't know what the motive was, we think it may be a breaking and entering," Sen. Hart said.
"It's incredibly unsettling but for a close-knit community like ours, one that's relatively safe, this is alarming," Rep. Collins said.
Police will not comment on motive, but say crime is down 7 percent overall for the year in Southie though there has been a slight increase in residential break-ins.
The medical examiner is doing an autopsy - results are not going to be back today.
Police are seeking the public's help with information.
If you have information, you are asked to call Homicide detectives at (617) 343-4470