Terror police find 'martyr tapes' Some 23 people are currently being held by police Police investigating an alleged plot to bring down airliners have found several martyrdom videos in the course of their searches, the BBC has learned.Unofficial police sources said the recordings - discovered on laptop computers - appear to have been made by some of the suspects being questioned. Scotland Yard has refused to comment on what officers are finding. Police are continuing to search woodland at High Wycombe in Buckinghamshire and 14 addresses. The Metropolitan Police, which is leading the inquiry, has said it has already...