Londonderry bomb: three arrested in alert linked to dissidents 4 March 2013 Last updated at 06:25 Three men in their 30s have been arrested after a bomb alert in Londonderry. Police are linking it to dissident republicans. About 100 families had to leave their homes on the Letterkenny Road after a suspicious object was found in a van. Two men were arrested at the scene and a third after a house was searched. Meanwhile the Ormeau Road in south Belfast has reopened after an earlier bomb alert. Army bomb officers were called on Sunday evening after a suspicious object was found. They carried out a controlled explosion. It turned out to be a hoax.