Baby abducted from upscale suburban Philadelphia mall

This undated family handout photo provided by the Upper Merion Township Police Department shows Ahsir Simmons. Police are searching for a woman who they say kidnapped the 7-week-old baby boy from the King of Prussia Mall in suburban Philadelphia on Thursday, March 31, 2016. (Upper Merion Township Police Department via AP) (The Associated Press)

This image made from a surveillance video provided by the Upper Merion Township Police Department shows a woman leaving the King of Prussia Mall with 7-week-old Ahsir Simmons on Thursday, March 31, 2016, in Philadelphia. Police are searching for a woman who they say kidnapped the baby boy from the upscale shopping mall in suburban Philadelphia. (Upper Merion Township Police Department via AP) (The Associated Press)

Police are searching for a woman who they say kidnapped a baby boy from an upscale shopping mall in suburban Philadelphia.

Upper Merion Township police say 7-week-old Ahsir Simmons was abducted by a stranger Thursday evening at the King of Prussia Mall.

Police say a woman befriended the boy's family at the mall. She was alone. Police say they sat down together in the food court. That's when they say the woman asked if she could hold the baby, and then took off with him.

An Amber Alert has been issued as police continue to search for the unidentified woman and the baby.