Authorities in Essex County have released the name of the woman killed in a house fire earlier this month.

The Essex County Prosecutor’s Office announced Wednesday that 63-year-old Justine Rizek died June 5 in her Millburn home after it caught fire. Firefighters found Rizek on the second floor of her Norwood Terrace. Rizek was taken to St. Barnabas Hospital for treatment but later died due to her injuries.

The prosecutors say that there was a delay in formally identifying Rizek because she lived alone and it took some time to identify a next of kin.

Authorities say that the cause of the fire is under investigation, but it appears to be accidental.