PRETORIA, South Africa (CNN) -- Prosecutors in the Oscar Pistorius murder case will make a final push Friday to keep the acclaimed track star in jail after a bail hearing jolted by the sudden removal of the lead investigator.
The South African Police Service pulled Hilton Botha from the case Thursday after prosecutors reinstated attempted murder charges against him. Botha is accused of chasing and firing on a minibus full of people while drunk in 2011. He is charged with seven counts of attempted murder.
The allegations were the latest blow to a prosecution case that has suffered through several miscues during the bail hearing, including admissions that police could have contaminated the crime scene and failed to properly catalog evidence.
Prosecutors are trying to keep Pistorius jailed pending his trial on a charge of premeditated murder in the Valentine's Day shooting death of his girlfriend, model Reeva Steenkamp. The hearing ended Thursday with no decision on bail and is scheduled to resume Friday.
Pistorius, 26, is accused of the premeditated murder of Steenkamp after, according to prosecutors, a heated argument in the early morning hours of Valentine's Day.
The sprinter, however, says he thought an intruder was hiding in a toilet room inside the bathroom of his Pretoria home. He says he fired into the room in a fit of terror before realizing the person inside was Steenkamp.
Court officials learned Thursday that prosecutors had restored the charges against Botha in the 2011 incident. The charges had previously been withdrawn for additional investigation, but prosecutors decided Wednesday to proceed, said Commissioner Riah Phiyega of the South African Police Service.
Phiyega praised Botha, saying he is an experienced investigator who "has presented the case of the police well."
Botha was replaced by the department's most senior detective, Vinesh Moonoo, in a move Phiyega said positioned the department for a "long-haul" investigation of Steenkamp's killing.
During the three-day bail hearing, being held in a dark, stuffy Pretoria courtroom, defense attorney Barry Roux hammered away at the credibility of Botha and the entire police investigation.
He argued police had missed a bullet in the toilet of the bathroom where Steenkamp was shot and may have contaminated the crime scene by failing to wear protective foot covers.
Botha told Roux that investigators didn't wear the booties because they'd run out.
Bulelwa Makeke, the spokeswoman for South Africa's National Prosecuting Authority, said before the announcement of Botha's removal that the accusations against the investigator would be little more than a "speed bump" in the Pistorius case.
In arguments wrapping up Thursday's session, Prosecutor Gerrie Nel said Pistorius' defense team has failed to explain why investigators found two cell phones and the gun believed to have been used in the shooting in front of the shower.
That goes to the prosecution claim that Steenkamp didn't merely get up to relieve herself in the middle of the night, but in fact had locked herself in the bathroom with her cell phone to protect herself from Pistorius.
Nel also said Pistorius has shown a lack of realization of what he has done and cast doubt on Pistorius' claims that one of the reasons for his extreme fear that night was that he had been a victim of burglary and violent crime in the past.