KEANSBURG - Neighbors are wondering what caused a fire at a vacant Keansburg home.

A fire erupted last night at 128 Main St., a foreclosed home which has been vacant since Superstorm Sandy flooded it in October.

Police say utilities were off at the time of the fire, ruling out any kind of electrical accident.

The home was foreclosed in 2012, and the property is now owned by CitiBank.

So far, police have not offered a cause for the fire.