NEW YORK (CBSNewYork) — Police say an attempted kidnapping involving a toddler was caught on camera in Brooklyn.

It happened Monday afternoon in the outside area of the Thanksgiving Supermarket on 86th Street in Bensonhurst.

Police said a grandmother was shopping with her 3-year-old grandson, who was sitting in a stroller. 

When she turned around, police say the stroller was gone.

In surveillance video released by investigators, you can see a man slowly start to walk the stroller down the street with the little boy in it. The man can be seen pushing the stroller with one hand.

Police said the boy’s grandmother saw the man pushing the child away and ran after him. In the video, you can see the grandmother turn the stroller around, the toddler unhurt.

Police said the man took off west on 86th Street.

“He’s a monster. They should persecute him to the full extent,” one resident told CBS2.

Staff at the store next door didn’t see the incident when it happened, but later saw it on their surveillance camera in disbelief.

“It’s a shame that someone could actually think doing that crazy stuff,” said resident Lauro Serrano.

Investigators describe the suspect only as a man between the ages of 25 and 40.

Anyone with information is asked to call the NYPD’s Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782), visit www.nypdcrimestoppers.com or text tips to 274637 (CRIMES) then enter TIP577.