By Maria McCann
Emergency services have been called to the County Hall in Coleraine where a white powder is believed to have been found.
Police say the suspect package which is not believed to be any type of explosive is being examined at the scene.
More follows...
Woman charged over theft of campaigner’s car ‘must stay out of Belfast’
Bluetongue restrictions in Northern Ireland will be relaxed from Friday
Conviction led to safeguarding review at Presbyterian Church
Coroner vows to keep Noah Donohoe inquest ‘on track’ for January start date
Appeal to European Court being considered after ruling over Troubles disclosures