A Denham Springs home burned down Tuesday morning and fire investigators consider the fire suspicious because the same house was also damaged by fire last week.

The State Fire Marshal’s Office is investigating and is calling both fires suspicious, said Deputy Chief Brant Thompson.

“We do certainly have some concerns. ... We just find it incredibly coincidental,” he said.

The house at 31822 Burgess Ave. was recently bought in a foreclosure sale. The new owners had been renovating the building and property for about two weeks, and no one was living at the home, Thompson said.

The first blaze broke out Friday and caused “significant” damage to the home. Firefighters at the time thought a floating ember from a nearby outdoor debris burn may have caused the fire, and the state was not called in to investigate, Thompson said.

Around 4 a.m. Tuesday, a second blaze destroyed what was left of the house.

The deputy chief said investigators were still trying to determine how the second fire started and where it began, but they believe it originated from inside the house.

The previous fire is complicating their case because they must sort out evidence from each blaze.

“It’s a very unique situation,” Thompson said.

Investigators are still trying to rule out accidental causes for the second fire before calling it an arson.

Thompson said power to the building was cut off after the fire on Friday.