Flames could see coming through the roof as the building collapsed
By Indy Almroth-Wright
BBC News, Southampton
Fire crews are still dealing with a "deep-seated" fire near Southampton FC's St Mary's Stadium.
It broke out at industrial units close to the stadium sending a vast plume of smoke into the sky over the city on Wednesday, at about 13:00 GMT.
Marine Parade remains closed and people living nearby are being urged to keep windows and doors closed, and not touch any debris from the blaze.
The fire led to the Saints Championship match against Preston being called off.