Two explosions were reported in Northern Ireland tonight.
The blasts happened near a tourist office and a benefits office in the centre of Londonderry, police said. No-one was injured.
The Police Service of Northern Ireland evacuated and cordoned off the area following telephone bomb warnings.
Dissident republicans have launched a series of attacks in the city.
Tonight's explosions happened in Strand Road and Foyle Street.
Londonderry is preparing to be the UK's City of Culture for 2013 and its organising office for the event has been targeted before.