Police in London are continuing their hunt for the culprits behind a Real IRA bombing of the BBC Television Centre in west London over the weekend.
Officers last night questioned a motorist they believe was involved in a road rage incident with the driver of the taxi in which the bomb was left.
The motorist said he had been "cut up" by the driver of the red taxi and the two had a verbal altercation before continuing on their journeys.
Meanwhile, RUC Chief Constable Sir Ronnie Flanagan has warned that the Real IRA will plan more attacks in England in a bid to gain publicity for its cause.