What should've been a magical day turned into a nightmare for one new mother.

A woman from San Bernardino, California was giving birth to her third child this week while her two other children died in a fire at their apartment. The woman's 6-year-old daughter and 2-year-old son perished in the fire. The blaze also left her husband severely injured.

Authorities say the residence should not have been inhabited. In fact, the family was living illegally in the apartment, which is owned by a bank. Only a few weeks ago, the home was cited for several safety violations, including no working smoke detectors.

Officials are looking into the matter and say the parents may be held accountable, pending the outcome of their investigation.

More From AM 1050 KSIS