Firefighters say 19 adults and 15 children are now displaced from their homes.

Fire investigators say a northeast Columbus apartment building was destroyed and damages are estimated at $2 million.

Crews were called to the scene in the 5000 block of Buffalo Run Wednesday afternoon.

The residents of 10 affected units made their way out safely. No injuries were reported.

Two residents went door-to-door alerting people after they saw smoke coming from one of the unit's chimneys.

One of the men, Tony Garnon, said when he knocked on the door of a young couple in a lower level unit they told him what they think sparked the flames.

“They were burning their Christmas tree in the fireplace and that seems to be what started it all,” he said.

Investigators said they’re focusing on the Christmas tree as the cause, but they’re not ready to release an official cause.

Firefighters say 19 adults and 15 children are now displaced from their homes. They say the building with all 10 apartments are destroyed.