Humberside Police are treating a fire at a warehouse in Grimsby as arson.
The fire started in the compound yard of a warehouse on Spencer Street at around 11pm on Tuesday, August 15.
No-one was injured but the fire spread into the building through the shutter doors.
Anyone with information should call police on 101, quoting log 620 of August 15.
Alternatively, contact Crimestoppers anonymously on 0800 555 111.