Detectives believe a single gang is responsible for a spate of armed robberies at businesses across Belfast that took place within hours of each other.
They took place in the north and west of the city on Tuesday night.
At around 7.55pm a man armed with a suspected gun entered a grocery store in the Crumlin Road area while another waited outside. He made off with a sum of cash and a quantity of cigarettes. Both men are believed to have fled on foot towards Legmail Street.
Less than an hour later it was reported that two men, both believed to be armed with suspected firearms, entered a bookmakers in the Shaws Road area of west Belfast and demanded money. They left empty-handed and headed in the direction of Rossnareen Road.
At around 9.10pm two men, one with a suspected firearm and one with a hammer, entered a bookmakers in the Andersonstown Road area. Again they left empty-handed.
Detective Chief Inspector Gary Reid appealed for witnesses.
He said: "At this time, a link between the three armed robberies is being investigated. I would appeal to anyone with any information about these incidents to contact CID at Musgrave Police Station on the non emergency number 101.
"Or if someone would prefer to provide information without giving their details, they can contact the independent charity Crimestoppers and speak to them anonymously on 0800 555 111."