A man and a woman used a baby stroller to steal from a Dartmouth, Nova Scotia, grocery store Sunday, police said.

Halifax Regional Police Sgt. Mark Hobeck said a woman and a man entered a food store on Wyse Road at around 2 p.m. on Mother's Day.

"Security noted that they looked like they were taking some items off the shelf and concealing them in a baby stroller," he said.

Security guards confronted the man and got into a physical confrontation with him, Hobeck said.

"During that altercation [the man] indicated he had a firearm and was going to shoot the security guards if they didn't let him go."

The guards stepped back and the couple fled the store with the stroller. Police believe there was a baby in the stroller.

Hobeck said police do not believe the man actually had a gun. No one was injured.

Police arrested a woman they said was involved in the incident a few hours later. They are still looking for the man.

Police said he's between 27 and 32 years old and was last seen wearing a black cap and had a black backpack.

Hobeck could not say if the baby in the stroller belonged to either the man or the woman involved.