South Africa captain Faf du Plessis has been charged with ball tampering, the International Cricket Council (ICC) said on Friday.Du Plessis was charged for breaching Article 2.2.9 of the ICC’s Code of Conduct after television footage appeared to show him applying an artificial substance to the ball during the fourth day’s play in the second Test against Australia, which concluded in Hobart on Tuesday. (Faf Du Plessis lauds ‘relentless’ South Africa attack)The charge relates to changing the condition of the ball in breach of Law 42.3 and has been laid by the ICC Chief Executive David Richardson who has exercised his right to do so according to Article 3.1.3 of the Code. (South Africa humiliate Australia in Hobart, clinch series 2-0) Du Plessis has pleaded not guilty to the charge and, as such, the matter will now be heard by Andy Pycroft of the Emirates Elite Panel of ICC Match Referees. Details of the hearing will be announced in due course. The alleged incident happened on Tuesday morning when TV footage appeared to show du Plessis applying saliva and residue from a mint or sweet, an artificial substance, to the ball in an attempt to change its condition. All level 2 breaches carry an imposition of a fine between 50 per cent to 100 per cent of the applicable match fee and/or up to two suspension points, and three or four demerit points.