Coronation Street star Craig was told the sad news by show bosses last night (19 November) and has since left the Australian jungle.
It has been reported that the actor's older brother Dean passed away suddenly following a heart attack.
A spokesperson for ITV this morning confirmed: "Craig decided to leave the IAC camp earlier today [Thursday] and will be heading back to his family the UK. We send our sincere condolences to Craig and his family."
According to reports, Craig was told about Dean's death when the campmates woke up on Thursday morning Australia time, which was Wednesday night UK time.
The Mirror claims bosses also made the decision not to include Craig's phoneline number when asking viewers to vote for the latest Bushtucker Trial, The Terror Tavern.
Craig is the second of this year's campmates to leave the jungle early. TOWIE star Gemma Collins quit I'm A Celebrity yesterday after telling her co-stars she felt "sick and panicky".
Meanwhile, tonight two new campmates will be entering the jungle. X Factor contestant Jake Quickenden and former MP Edwina Currie are both joining the lineup in Australia.
I'm A Celebrity...Get Me Out Of Here 2014 lineup: