Pakistan captain Sarfraz Ahmed apologised on Wednesday following a controversial comment aimed at South Africa's Andile Phehlukwayo which was picked up by a stump microphone during the second one-day international in Durban on Tuesday.
Sarfraz was heard making a comment in Urdu about Phehlukwayo during the South African all-rounder's match-winning partnership with Rassie van der Dussen.
According to espncricinfo.com, the comment could be translated as: "Hey black guy, where's your mother sitting today? What (prayer) have you got her to say for you today?"
The website and South African media reported that Sarfraz could face disciplinary action from the International Cricket Council (ICC).
The Pakistan captain tweeted: "I wish to extend my sincere apologies to any person who may have taken offence from my expression of frustration which was unfortunately caught by the stump mic during yesterday's game against SA.
"My words were not directed towards anyone in particular and I certainly had no intention of upsetting anyone.
"I did not even mean for my words to be heard, understood or communicated to the opposing team or the cricket fans. I have in the past and will continue in future to appreciate the camaraderie of my fellow cricketers from across the globe and will always respect and honour them on and off the field."
South African media reported South African team manager Mohammed Moosajee as saying that the ICC and the match officials had "noted the alleged incident" and that the matter was in the hands of the ICC.
There was no immediate comment from the ICC.
In the post-match presentation, man of the match Phehlukwayo seemed relaxed about having been the target of several comments by Pakistan players. "It was good chat," he said.
Whether or not Sarfraz faces any action, his team is likely to face a sterner challenge in the remaining three matches with wicketkeeper-batsman Quinton de Kock and fast bowler Dale Steyn added to the home squad after being rested for the first two matches.
Left-arm fast bowler Beuran Hendricks, who has played in Twenty20 internationals but not in one-day internationals, was also added to the squad.
Heinrich Klaasen, Dane Paterson and Duanne Olivier dropped out.
South African squad
Faf du Plessis (captain), Hashim Amla, Quinton de Kock (wkt), Beuran Hendricks, Reeza Hendricks, Imran Tahir, Aiden Markram, David Miller, Andile Phehlukwayo, Dwaine Pretorius, Kagiso Rabada, Tabraiz Shamsi, Dale Steyn, Rassie van der Dussen
Remaining matches:
January 25, Centurion
January 27, Johannesburg
January 30, Cape Town
Chhorii 2
Reena Barai, chair of the PB Conference, on the podium with Sadik Al-Hasan, Harry McQuillan, Shilpa Shah and Nick Kaye on stage
Yasmin Karsan, Pritee Panchmatia and Fin McCaul
Baba Akomolafe, Rachna Chhatralia, Patricia Tigenoah-Ojo and Raj Matharu
Shailesh Solanki 
Reena Barai 
Janet Morrison
David Webb 
Damian Talbot
A still from Phule