Not clear as yet if there have been any casaulties.
More to follow. Reports are sketchy, but it seems that the blast took place in a residential road, away from the crowded central shopping areas that were the scene of the bloody atrocity committed 13 years ago. The bomb was planted underneath the car of a local Catholic PSNI officer .The officer is critically wounded.
This act is very likely to have been perpetrated by extreme Republican dissidents; and it follows a trend of Republican/gang violence against police in the province, a battle for which London and Stormont allocated more than £240 million last month.
UPDATE: DUP MP Jeffrey Donaldson reports that the officer has died.