His company, Tui Management Services, is the joint owner with the Vanua Development Corporation (VDC) of Pacific Connex (PCX), which sells SAP software and has sought to enter the 3G mobile telephony market in Fiji.
The Fiji Sun reported on 25 October 2006 that Colonel Pita Driti, the land force commander, had condemned Khan for employing former Counter Revolutionary Warfare Unit (CRW) soldiers as bodyguards.
Tui Consulting's business was assisting utilities and public sector organizations implement SAP software solutions.
Reports quoted the utility as saying that it encountered large-scale billing problems beginning in January 2000, eventually affecting about 144,000 of the 1.2 million electricity accounts.
PCX of which he owned 49% won a US$9.2 million contract in 2004 to supply a new SAP based computer system and maintenance service to the NLTB.
An independent audit report undertaken in 2007 by KPMG Australia criticised the NTLB for allegedly failing to conduct a proper investigation before buying the computer system.
The KPMG audit report questioned the credibility of the mySap system and recommended the NLTB seriously reconsider continuing its business relations with PCX.
[10] In April 2005 it was reported that Khan was a key figure in a bid by PCX to apply for a 3G mobile telephony wireless licence in Fiji.
Ballu Khan was one of a group of people arrested on 3 November 2007, as part of an investigation by the Fiji Police into an alleged assassination plot against members of the government.
stated that Khan was seriously ill in hospital as a result of being assaulted by police and the deadline to charge him with offences related to the alleged assassination plot against national leaders had expired.
[14][15] The writ claimed Khan's treatment amounted to torture and reckless disregard for his health, and his civil rights were abused.