Brooks, who was later crowned Queen of the Jungle, and darts player Eric Bristow were tasked with choosing between doors that either had a treat behind them or a "game over" sign.
What Brooks didn't know is that her daughter Kiki - who she had not seen for 18 days - was standing a few feet away from her behind one of the doors.
When the door with the "game over" sign was picked, Brooks returned to camp without being reunited.
Television regulator Ofcom received 66 complaints, while Brooks later called it "heartbreaking".
She said, "I signed up for this show, but Kiki didn't. I didn't want her to be so upset. I had no idea this was happening. It was my lowest point".
Ofcom will investigate whether ITV took due care to protect Kiki's welfare and whether the potential for offence caused by scenes of Brooks appearing distressed following the stunt were justified by the context.
A spokesman for I'm a Celebrity said at the time that a senior producer had seen "Kiki afterwards and she was fine", adding, "Kiki and her grandma come to the jungle every day with the other friends and family, so the experience wasn't as out of the ordinary as it might look".
Speaking to ITV News UK Editor Lucy Manning, Mr Fincham said that Mr Schofield "realises his mistake, he apologised for it fully and extremely quickly."
"I think he's under no illusions that this was a lapse in ITV journalism," he said.
"In live television, all sorts of things can happen. That doesn't mean they should happen," he said, adding that he had received a letter from Lord McAlpine today to which ITV would respond "very quickly."
Select Committee chair demands information about Schofield blunder
Conservative John Whittingdale, chairman of the Commons Culture, Media and Sport Committee, has written to Peter Fincham, director of television at ITV, calling for information about who was involved in the decision to hand the list of names to the Prime Minister.
As you are aware, during the interview, Mr Schofield presented the Prime Minister with a list of names of individuals alleged to have been involved in paedophilia which it had taken him "about three minutes" to obtain from the internet.
I understand that Mr Schofield has apologised for the fact that some of the names might have been visible and that Ofcom is also considering a complaint about this matter.
However, there has been widespread concern expressed about the decision itself to confront the Prime Minister with such a list.
I would therefore be grateful if you could say whether or not it is the view of ITV that this represented responsible journalism in the public interest.
I would also like to know at what level the decision was taken, what legal advice was sought, and what subsequent consideration has been given to the appropriateness of this broadcast.