Channel 5 has not specified whether the bereavement relates to a relative or friend of the 20-year-old for privacy reasons.
However, the History student has returned to the house after only a short time outside of the Elstree complex.
So far in the house, Scott has confessed his infatuation with fellow housemate Arron Lowe, having previously outlined his intention to find a long-term boyfriend.
Scott, who has said that he is obsessed with the upper classes, hopes to become a 'celebrity historian' after he leaves the series.
Big Brother continues tonight at 10pm on Channel 5.