"Police have been told a firearm was presented and that money and cigarettes were taken," he said.
No ambulance was called, he said. Police are investigating both robberies but it's not clear if they are linked.
The dairy's owner was unable to comment tonight as police are still at the scene.
But former owner Ram Lochan - who sold the shop last year - could recall his store being robbed three times in 23 years.
Lochan spoke to the Herald in 2008 when a friend's dairy nearby was robbed. At the time he said he was concerned shopkeepers had no way of protecting themselves.
"When we protect ourselves, we get charged - and if we don't we get stabbed. What do we do?" he asked.