The cause of a fire that heavily damaged a house in Bethany Beach Saturday night isn't known at this point.

Crews arrived on-scene in the 39 thousand block of Seaside Drive in Bethany Village around 11:30p.m., and found the oceanfront house engulfed in flames, Delaware State Fire Marshal's investigators said.

Everyone inside the house got out safely.

There's no dollar estimate for the damage just yet, and the investigation into what touched off the blaze continues.