Police in the North have today apologised after raiding the home of a Sinn Féin Lord Mayor as part of a probe into republican activity.

A mayor's house has been searched by police involved in a major security operation against republican vigilantes in Derry.

Three men have been arrested and eight weapons seized by police involved in a major security operation against republican vigilantes in Derry.

Thousands are expected to attend a rally against the Republican Action Against Drugs group in Derry later.

A group calling itself Republican Action Against Drugs has admitted killing a man in Donegal and warned more deaths could follow.