SEOUL: Former UN Secretary-General Ban Ki-moon, who is believed to be considering a presidential run in South Korea, apologised on Saturday for causing public concerns over his family members who had been named in a bribery case in the United States. Ban said in a statement he hoped any discussions between law enforcement authorities of South Korea and the United States - if they were taking place as reported - would be 'strict and transparent' so that there is no suspicion left in the South Korean public. He also reiterated he has 'absolutely no knowledge' of the case. A US prosecutor has said Washington has asked South Korea to arrest Ban's brother, Ki-sang, on charges he engaged in a bribery scheme to carry out the sale of a Vietnamese building complex. READ ALSO:

• US asks South Korea to arrest former UN chief Ban's brother