Police are investigating a series of suspicious fires in Waterloo.

The latest incident happened Wednesday at a property on Clearwater Crescent.

Neighbours spotted flames coming from a shed shortly after 4:30 a.m.

They also noticed a man walking in the area.

Firefighters put out the flames quickly and damage was contained to the shed and a fence.

Police brought in a canine unit but they were unsuccessful in tracking down the man.

They say this is the eighth suspicious fire since July 6th.

All of them happened overnight in northwest Waterloo.

Firefighters are advising residents in the neighbourhood to remove any items that could catch fire and lock their sheds.

They have not released details about how the shed fire was started.

Damage is estimated at $4,000.