Smithfield, N.C. — A 3-year-old boy who disappeared from a Smithfield flea market on Sunday was found unharmed early Tuesday, authorities said.

Police withheld details concerning where Siraj Munir Davenport, also known as Roji, was found or who located him.

The boy's mother told police she was loading produce into her car Sunday morning at Brightleaf Flea Market and that when she looked up, Roji was gone.

Roji's mother, Rosa, spent most of Monday talking with local and federal investigators. Smithfield Police Chief Steve Gillikin had said the mother was not a suspect in the boy's disappearance. The boy's father reportedly was out of the country at the time.

Local, state and federal investigators searched Sunday and Monday for Roji. It was unclear what brought federal authorities into a missing-child case.

"Every minute that goes by is another minute we don't know where the kid is," Gillikin had said Monday. "We're doing everything we can to find him and looking for a positive ending."

Gillikin said police followed all leads and looked into all possibilities about what might have caused Roji to disappear.

"I think it's too early to say it's an abduction," Gillikin had said Monday. "I mean, the kid disappeared, and there are lots of cases where kids wander off or walk into the woods or different areas."

A candlelight vigil for Roji, for whom state authorities issued an Amber Alert on Sunday, was held Monday night. People gathered at the Barbour's Grove Park in Four Oaks to pray for his safe return.

Police canceled the Amber Alert at 12:27 a.m. Tuesday.