A trio of Pakistan cricketers will learn on Friday if they are to face prosecution over claims that they accepted cash bribes to fix matches.
Senior lawyers at the Crown Prosecution Service (CPS) have been considering evidence that the men - Mohammad Amir, Mohammad Asif and Salman Butt - conspired to defraud bookmakers.
A fourth man, businessman Mazhar Majeed, could also be charged over allegations that he accepted £150,000 to fix the actions of players during a Test match against England at Lord's.
Amir, Asif and Butt have all been interviewed under caution by Metropolitan Police officers. Majeed was arrested.
A fifth man, player Wahab Riaz, was also interviewed under caution but it is not known why he will not be included in the announcement on Friday.
The corruption claims first surfaced in the News of the World newspaper. Majeed is accused of accepting cash to ask players to deliberately bowl no-balls during their tour of England.
Amir, Asif and Butt were provisionally suspended by the International Cricket Council (ICC) pending a hearing which took place in January. The verdicts in the case are expected to be announced on Saturday, with all three players denying any wrongdoing.
A CPS spokesman said a decision on the fate of the four men will be released at 11am on Friday.
Former Essex county cricketer Mervyn Westfield was charged with fraud in September at the conclusion of a separate inquiry.
He will go on trial over claims that he deliberately played poorly during a one-day 40-over match between Durham and Essex in 2009.