Woman held in Christmas Eve firefighter shooting case
A 24-year-old woman has been arrested in connection with the guns used in the shooting of two firefighters in the state of New York on Christmas Eve.
Dawn Nguyen faces a state charge of filing a false business record, police said, with a federal charge pending.
Her brother, Steven Nguyen, told local media the guns used to kill the firemen had been stolen from his sister.
William Spengler is alleged to have shot dead two firemen who arrived to tackle a fire at his home in Webster.
Police said they found a long note from Spengler, 62, outlining his plans, in which he said he was planning to "do what I like doing best - killing people".
Seven homes on a narrow stretch of land beside Lake Ontario were destroyed by the fire. Another two firemen and an off-duty police officer were wounded in the attack.
Police said the charge against Ms Nguyen was connected to the sale of an AR-15 semi-automatic rifle and a 12-gauge shotgun that the attacker had with him on the night of the shooting, according to the Associated Press.
A third gun, a Bushmaster .223 calibre rifle with flash suppression, is believed to have been used in the attack but Ms Nguyen is not thought to be connected to that weapon.
Ms Nguyen and her mother Dawn Welsher had lived next door to Spengler in 2008.
Spengler had served 17 years in jail for killing his grandmother with a hammer but had done nothing to attract the authorities' attention since being granted parole in 1998.
As a convicted criminal, he was not allowed to own weapons.