Trauma of Troubles must not be forgotten, says relative of Thomas Niedermayer

Tanya Williams-Powell, the granddaughter of Thomas Niedermayer killed by the IRA in 1973 (Liam McBurney/PA)

The granddaughter of a German businessman who was killed by the IRA 50 years ago has said that the trauma caused to families during the Troubles must never be forgotten.

Events are taking place in Belfast and Lisburn on Friday ahead of the anniversary of the death of Thomas Niedermayer.