British police have established that two men were in the taxi used in the bomb attack on BBC Television Centre shortly before it exploded.
"The men left the red cab outside the building in Wood Lane, west London, then walked off", said Deputy Assistant Commissioner Alan Fry, head of the Anti-Terrorist Branch.
"One briefly went back to the taxi and removed a bag then rejoined the other man before the high explosive device went off last week", he added.
Mr Fry said it had also been established that the taxi was heading towards White City, then made a U-turn in the forecourt of the Esso garage in Wood Lane, before heading back towards the BBC centre.
Detectives yesterday staged a reconstruction of events leading up to the bomb attack.
Camera crews, photographers and reporters watched as an identical red taxi was twice driven along Wood Lane towards White City, west London, as it did last Saturday night at about 10.40 p.m. The taxi paused briefly outside the Television Centre as if to stop, before continuing to the nearby Esso garage where it did a U-turn.
After making the U-turn in the forecourt, it returned along Wood Lane before parking outside the television centre.
Anti-Terrorist Branch officers had previously been working on the theory that a lone terrorist, thought to be from the real IRA, was responsible for the blast, which happened shortly after midnight on Sunday.
The man who sold the taxi described only one buyer, while police said there may have been a road rage incident involving the man driving the cab.
But Mr Fry said it had not been known that two men were in the taxi when it was left outside the BBC.
It was thought that, after getting out of the cab, the two men headed off in the direction of Shepherds Bush.
The bomb went off just under two hours later.
PA