In a dramatic twist in the murder case involving South African paralympian champion, Oscar Pistorius, it was revealed on Thursday (February 21) that the chief investigator who gave evidence against Pistorius the day before is facing charges for attempted murder.

Hilton Botha, who is facing attempted murder charges for opening fire on a minibus containing seven people in 2011, is due to appear in court in May.

The charges were provisionally withdrawn, but were reinstated on Wednesday (February 20) - at the behest of the state prosecutor - after Botha had taken the stand against Pistorius inPretoria's main magistrates court.

Under cross-examination at the paralympic star's bail hearing on Wednesday, Botha was accused of contaminating the crime scene in Pistorius' house and had to backtrack on key details such as the distance of witnesses from the home.

Lead defence counselBarry Rouxaccused the police of oversights and slip-ups in their initial investigation.

The bail hearing for Pistorius, who has been charged with shooting dead his girlfriend in the early hours of Valentine's Day, is due to restart at 0900 GMT on Thursday.