Lancaster police Chief Keith Sadler says whoever set the fire Monday morning was targeting 30-year-old Olga Sanchez-Reyes. The mother of three was found dead inside her home by firefighters responding to the call.
Sadler says the woman's two daughters, ages 8 and 9, were hospitalized with burns and smoke inhalation. Authorities say Sanchez-Reyes' husband and 13-year-old son were also home at the time but escaped injury.
The Lancaster county coroner says further tests are needed to determine the cause of Sanchez-Reyes' death.