Codiac RCMP are investigating four armed robberies that have occurred in Moncton since Saturday.
Investigators believe all four incidents could be related and are asking for the public's help in identifying the suspect, said Const. Damien Thériault.
In all four cases, a man entered a local business armed with a knife, demanded money and fled with an undisclosed amount of cash, he said.
No one was injured during any of the incidents.
But John Maeng told CBC News the robbery at the Main Stop convenience store at 1383 Main St. on Sunday at about 4:45 p.m. left his father shaken.
"A guy walks in with a toque and comes through the entry that I guess anyone can come through and just asked my dad to open the cash register with what appeared to be a bread knife," he said.
It all happened quickly, said Maeng.
"Life is … worth more than the money. So it took my dad a little bit to open the cash register, I mean, if anyone has a knife pointing at you, you're nervous, you make a mistake here and there, but he got the register open, but during the process my dad was able to press the silent panic button," he said.
"Besides that, I mean he took off — put the knife in the dumpster and ran."
The first robbery occurred on Saturday, shortly after 7:30 a.m. at a gas station and convenience store at 660 Elmwood Dr., said Thériault.
The second incident was that same day at about 8:45 p.m. at a convenience store at 960 St. George Blvd.
Then, on Monday, just before 2 p.m., police were called to Ed's Sub at the corner of Mountain Road and Université Avenue.
The investigations continue.
The suspect in all four cases is described as a Caucasian male in his early 20s, about five feet eight inches tall with an average build and short dark hair.
RCMP have released photos of the suspect, taken from surveillance videos, in the hopes the public can help identify him.
Anyone with information is asked to call RCMP at 506-857-2400 or Crime Stoppers at 1-800-222-TIPS (8477).