An early morning fire forced the evacuation of an apartment building in Woodstock.

Police say the top level of the three-storey building was fully engulfed in flames when they arrived.

All of the residents and their pets were evacuated and placed on a city bus to keep warm as crews battled the blaze.

Damage is estimated between $50,000 and $75,000 dollars.

The investigation is ongoing, but the fire is not deemed suspicious.