London , England ( CNN ) -- The three Pakistani cricket players at the center of betting allegations in London left the United Kingdom on Friday . All three were interviewed by police last week under caution , meaning police believed they may have committed a crime . The players have promised to return to help investigators `` in due course , '' London 's Metropolitan Police said . The players departed London 's Heathrow airport at about 11:30 a.m. ( 6:30 a.m . ET ) . The betting scandal has rocked the cricket world , with allegations that members of the Pakistan national team were involved in `` spot-fixing '' during Pakistan 's Test series with England late last month . Spot-fixing involves deliberately throwing parts of a game , rather than the whole match . The News of the World , the British tabloid that first reported the allegations , said players deliberately bowled `` no balls , '' or fouls , at specific points in the game and that the alleged ringleader made 150,000 pounds ( about $ 230,000 ) in the scam . No players have been arrested over the allegations , but the three questioned by police -- teenage cricket star Mohammad Amir , Mohammad Asif , and team captain Salman Butt -- were provisionally suspended by the sport 's governing body and charged with various offenses under the International Cricket Council 's anti-corruption code . Their team is continuing a two-month tour of England without them .
The players have left London . All three were interviewed by police last week . They are at the centre of betting fraud .