Video - which has not been independently verified by ITV News - appears to show gas pipes exploding in Taiwan and later captures jets of fire shooting up from the street.
After around 46 seconds on a video posted on YouTube, following an initial explosion, jets of flame begin to burst from the road.
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Armed police have carried out a raid apparently linked to Wednesday's deadly terror attack in Westminster.
Cheryl Grimmer vanished from inside a beach shower block in Wollongong, Australia, in 1970, when she was just three.
Pc Keith Palmer was on the front line and because of his actions, the Westminster attacker was unable to kill anyone else.