Father of victim of 1998 Omagh bomb: 'We will not tolerate this'

Police in Northern Ireland investigating the murder of one of their officers suspect dissident republicans were behind the killing.

Ronan Kerr, who was Catholic, was killed when a bomb exploded under his car in Omagh on Saturday.

Michael Gallagher is a spokesperson for the Omagh Victims' Group. His son was one of the 29 people killed in the last Omagh bomb in 1998.

He says more needs to be done to root out the extremists who remain committed to violence.