Two 21-year-old men are being questioned by gardaí over a raid on the post office in the Co Galway village of Kilmore yesterday afternoon.
The two were arrested near Portumna at around 9.00 p.m. last night after a five-hour chase.
An undisclosed sum of cash was recovered.
They are being detained at Loughrea Garda Station, where they can be held for up to 24 hours before being charged or released.