KITCHENER -- A trailer parked at a Kitchener second-hand store loading dock caught fire overnight.

Fire officials responded at around 11:15 p.m. to the fire at Value Village on Gateway Park Drive.

Six vehicles and about 19 firefighters fought the fire, which was put out overnight.

Officials say there's around $300,000 in damage, but they're still doing assessments to see if there was any structural damage.

The trailer had been parked alongside the building and was being used to store old materials.

Fire crews say they're looking for video footage to investigate.

It's not clear whether the fire is suspicious or not.

On Friday afternoon, police said they're looking for a man in relation to the incident. He's described as a white man with a thin build, wearing blue jeans, brown work boots, a navy t-shirt and carrying a green backpack.

Person of interest

Police are looking to speak to this man in connection to the fire (Supplied: WRPS)

Anyone with information is asked to contact police at 519-570-9777 or Crime Stoppers at 1-800-222-8477.