Onlookers said the lorry which caught on fire in central London near the city's O2 Arena was "100% a BBC World News" truck which "exploded five times".
An onlooker, 42, said he hoped it was a controlled intentional fire, which was part of filming near East India Dock in London at around 8pm tonight.
The man, who works in set design, said filming often happens in the area for series like Married at First Sight.
But he said he noticed the BBC truck before it caught fire, because it was less common for the channel to film in the area.