Homicide

Feds want 10-year sentence for New York woman who bought a killer his guns

FILE - In this April 7, 2014  file photo, Dawn Nguyen listens as her attorney Matt Parrinello, delivers his opening statement to the jury during her trial in Rochester, N.Y.  Nguyen was sentenced to eight years in federal prison Wednesday, Sept. 17, 2014 for supplying guns to a former neighbor who used them to kill his sister and two firefighters in a Christmas Eve ambush that also caused seven homes to burn to the ground. Nguyen, 25, pleaded guilty in June to three felonies, including supplying guns to a known felon. (AP Photo/Democrat & Chronicle, Jamie Germano, Pool)

FILE - In this April 7, 2014 file photo, Dawn Nguyen listens as her attorney Matt Parrinello, delivers his opening statement to the jury during her trial in Rochester, N.Y. Nguyen was sentenced to eight years in federal prison Wednesday, Sept. 17, 2014 for supplying guns to a former neighbor who used them to kill his sister and two firefighters in a Christmas Eve ambush that also caused seven homes to burn to the ground. Nguyen, 25, pleaded guilty in June to three felonies, including supplying guns to a known felon. (AP Photo/Democrat & Chronicle, Jamie Germano, Pool)  (The Associated Press)

Federal prosecutors are seeking an extra-long sentence for a woman who bought the guns used by her former neighbor to kill two upstate New York firefighters on Christmas Eve.

The U.S. Attorney's Office is asking for a 10-year sentence Wednesday for Dawn Nguyen (WEHN), who's already in state prison for up to four years on related charges.

The 10 years is longer than the eight- to 14-month sentence her lawyer says sentencing guidelines suggest, but prosecutors say it's justified.

Nguyen has admitted to buying a semi-automatic rifle and shotgun in 2010 for William Spengler Jr., a felon prohibited from owning weapons.

More than two years later, Spengler fatally shot his sister, set fire to his West Webster home and ambushed responding firefighters. He shot four, killing two, before committing suicide.