VIRGINIA BEACH--Two police officers saw fire coming from a Sandbridge house and alerted those inside to the danger.
They spotted smoke and flames coming from 2741 Sandfiddler Road around 2:20 a.m. Thursday.
The woman, her daughter, son and daughter-in-law were awakened by knocks at the door.
'Thank God the policemen came by because it went so fast. If they had not come and banged on the door, I think we probably wouldn't have made it out,' said Barbara Dougherty, who has lived in the home for 20 years.
Firefighters had the fire under control in about 15 minutes, but the fire caused a lot of damage to the first and second floors of the home.
Investigators say fireworks caused the fire, saying it was either a discarded firework or one that went off, landed and did a slow burn.
Battalion Chief Tim Riley says the four stated they didn't have any fireworks for the Fourth of July celebration.