Courtesy City of Bloomington Police Department/Handout via REUTERS Emmanuel Deshawn Aranda, charged with attempted homicide of a 5-year-old boy thrown or pushed from a third-floor balcony at Minnesota's Mall of America, is seen in this photo released by police in Bloomington, Minnesota, U.S., on April 12, 2019.
Potts said the incident was isolated - that Aranda and child had not known each other prior - and that investigators are "actively trying to figure out why this occurred ... whether it was an interaction up on the floor or why that is".
Witnesses told police that the child may have been pushed or thrown from the mall's third level to the first floor, Potts said.
"Of course, our immediate concern is for the child", Potts said, adding the mother is with the child.
The Bloomington Police Chief did not reveal the suspects name but said he was a 24-year-old man who is now in police custody.More news: Solskjaer not sensing Pogba misgivings amid speculation
Bloomington Police Chief Jeffrey Potts said the suspect immediately took off running but was quickly found and arrested at the mall.
"She was screaming 'Everyone pray, everyone pray, '" shopper Brian Johnson told CBS. "It was horrific", she said.
Potts did not say whether the child and his family are from Minnesota or visiting.
Detectives are also also working with the mall to determine if there is any surveillance video.
However, witnesses at the scene described the child being thrown or pushed by a man.More news: Trudeau defends changes to asylum laws that have refugee workers alarmed
Per CNN, Potts said, "The child did suffer significant injuries".
A portion of the mall was expected to remain cordoned off Friday as officers processed the scene.
Metro Transit had said there was no Blue Line light rail service in or out of MOA for a time due to police activity there.
"We have counseling services available for anyone who may need assistance". We know that this is a concerning event for all of us.
Police have said this appears to have been an isolated incident - and there is no threat to the public.More news: Taliban Announces 'Ban' On WHO, Red Cross Amid Vaccination Drive