A man was arrested today about a robbery in Co Tyrone last year in which two post office workers were held hostage.
The man (21) was detained in Strabane, where there have been a series of armed robberies.
It is understood the man is being questioned about the kidnapping of two women linked to a raid on a sub post office in Strabane last October.
The women were seized by a gang at a flat. One was driven off, while the second - a Post Office employee - was ordered to remove cash from the post office in the town's Melmont area.
The money was then left in a church car park in Co Donegal.
A substantial amount of money was taken.
