A reward of up to £5,000 is being offered for information on an armed robbery at a post office in Co Derry earlier this year.
Two armed robbers escaped with money from the Culmore Post Office earlier this summer.
Two armed robbers entered the branch in the village of Culmore on 9 July, threatening the postmaster with a gun, before escaping with what is believed to have been a substantial amount of cash.
The robbers then abandoned a stolen taxi vehicle and made their way across the border on foot to Muff in Co Donegal.
Crimestoppers UK and the Post Office is offering the £5,000 reward for any information that leads to the arrest and conviction of the persons responsible for this crime.