Police searched a large area of northwest Moncton after receiving the complaint at about 11:15 a.m.
Police issued a statement Sunday evening saying they didn't find anyone and were lifting blockades that officers put up in one neighbourhood.
Police say they're still investigating but there were no further sightings of the man they were seeking.
Police asked people to remain in their homes while they were searching and some of the officers patrolling the streets wore camouflage clothing and were armed with rifles.
For some residents it no doubt brought back memories of last June when three RCMP officers were killed and two others were wounded by a gunman who was later captured by police.
An RCMP spokeswoman, Cpl. Chantal Farrah, says police have always taken reports involving firearms very seriously. However last June's shooting rampage has created a heightened sense of awareness amongst officers in Moncton, she said.
"We're really on our guard," she said.
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