(KLZA)--Falls City firefighters responded to a fire at an unoccupied house Friday night and again early Saturday morning.

A release from Public Information Officer Jon McQueen said the first call to 923 Harlan was at 7:30 Friday evening.. The northwest portion of the house was on fire when firefighters arrived. They were on the scene until 12:30 a.m.

The Fire Department was called back shortly before 6 Saturday morning when the fire rekindled. Firefighers were on the scene for approximately an hour the second time.

The Nebraska State Fire Marshall is investigating the cause of the fire. As of now the cause is undetermined. The amount of damage is also undetermined at this time. The house is owned by Katelyn Moore.

The house is unoccupied and is being remodeled.