KANSAS CITY, Mo. (AP) — A woman has been charged with two counts of second-degree murder and one count of first-degree arson in connection with a fire that killed two Kansas City firefighters earlier this month.

Jackson County Prosecutor Jean Peters Baker announced the charges Tuesday against Thu Hong Nguyen, an employee of a nail salon and spa that was one of several businesses and apartments destroyed in the fire.

Firefighters Larry Leggio and John Mesh died when a wall collapsed on them while they were fighting the blaze. To other firefighters were injured.

Nguyen was arrested Monday night and is being held on $2 million bond.

An investigator with the Bureau of Alcohol, Tobacco, Firearms and Explosives says the fire was intentionally set in storage room of the salon.