The investigation into the London bombings which left nearly 50 dead and hundreds injured Thursday appears to be focusing on a Moroccan national who has mysteriously gone missing from the British capital in recent days. Scotland Yard and MI5 have urgently requested help from European agencies in tracking down a Moroccan national who has been living in Britain for 16 years and who is suspected of past terrorist activity in Europe and North Africa, the daily newspaper The Independent reported in Saturday editions. Mohammed al-Gerbouzi, who has also been linked to terrorist attacks in Madrid and Casablanca, disappeared from his...