How did Rochester gunman get the guns he used in the murder of two firefighters? Well, looks like someone engaged in a straw sale or otherwise falsified business records.

New York State Police Senior Investigator James Newell says Dawn Nguyen, of Rochester, faces a state charge of filing a falsified business record.

He says the charge is connected to the purchase of an AR-15 semiautomatic rifle and a 12-gauge shotgun that William Spengler had with him Monday when firefighters Michael Chiapperini and Tomasz Kaczowka were gunned down. Three other people were wounded before the 62-year-old Spengler killed himself.

UPDATE:

Nguyen was charged with filing a falsified business record.
Spengler apparently set the blaze to trap the firefighters, four of whom were shot before Spengler killed himself.
Nguyen’s lawyer, Dave Palmiere, says his client bought the two weapons legally, and that they were stolen, the Democrat and Chronicle reported.

Read more: businessinsider.com