It's believed the fire that swept through a derelict building undergoing refurbishment in Thorold Road was started deliberately.

Hampshire Fire and Rescue Service were in attendance tackling the blaze on on April 30, with four pumps, a serial ladder and a specialist equipment vehicle. The fire occurred on second floor of three storey building and caused a partial collapse.

Firefighters were at the scene until around 4pm.

The joint fire and police Arson Investigation Team are now assisting in this case.

Anyone who saw what happened or knows who may have been involved in starting the fire is asked to contact PC 25068 Liz MOORE on 0845 045 45 45 or call Crimestoppers anonymously on 0800 555 111.

Links
Echo report here
BBC report hereincluding video of flames appearing through the building's roof.