Judge Andrew Napolitano joined Shep on Studio B this afternoon to discuss the latest shocking twist in the Oscar Pistorius murder investigation. Today, the lead detective in the case, Hilton Botha, was reassigned after it emerged that he is facing reinstated murder charges for a 2011 shooting incident.

Here's some

more background from FoxNews.com:

The announcement that detective Hilton Botha faces reinstated charges in connection with a 2011 shooting incident came a day after he testified for the prosecution in Pistorius' bail hearing, and by all accounts bungled his appearance. He acknowledged Wednesday that nothing in Pistorius' account of the fatal Valentine's Day shooting of his girlfriend contradicted what police had discovered.

The spokeswoman for the nation's prosecutors urged that Botha be removed from the Pistorius case.

Pistorius, an Olympian whose lower legs were amputated when he was less than a year old, claims he mistook girlfriend Reeva Steenkamp for an intruder when he shot her in a locked bathroom in his home.

Bulewa Makeke, spokeswoman for South Africa's National Prosecuting Authority, acknowledged Thursday that the timing of the attempted murder charges is "totally weird" but said Botha should be dropped from the case against the world-famous athlete.

Lt. Gen. Vinesh Moonoo will take over the investigation, Riah Phiyega, the National Commissioner, said.

Napolitano explained that it's a "disaster" for the state "when the judge starts second-guessing the government" in its first presentation of evidence. He added that the judge will not accept the prosecutors' arguments that Pistorius is a flight risk.

Watch the interview, including why the government is "stuck with" Botha through the trial: