Jumping castle business damaged in Hoppers Crossing fire

A jumping castle business has gone up in flames at Hoppers Crossing.

A passerby raised the alarm shortly after midnight on Thursday.

The Princes Freeway was closed for a short period as more than 50 fire fighters battled the blaze, bringing it under control within about two hours.

The cause of the fire is not yet known.

Factories either side of the building were also damaged.