A car bomb exploded early Tuesday outside a police station in Londonderry, the second-biggest city of Northern Ireland, but no-one was injured, police said.
They said two armed men forced a taxi driver to transport the device to the police station, DPA reported. The explosion caused considerable damage.
Mark Durkan, a Social Democrat politician and parliamentary representative for the area, condemned the attack as "cowardly" Tuesday.
"It is extremely fortunate that no injury has been caused or life lost as a result of this attack," he said.
Dissidents backing the formerly terrorist Irish Republican Army (IRA) are believed to be responsible or the attack.