The Oscar Pistorius murder trial continued today with crucial evidence, including the bullet hole-riddled bathroom door and a cricket bat.

A defense attorney accused police of tampering with evidence by leaving a shoe print on the door. A police forensic expert also swung the cricket bat at the door today and determined that Pistorius likely wasn’t wearing his prosthetic legs when he shot his then-girlfriend, Reeva Steenkamp.

Prosecutors have now dropped the claim that Pistorius was wearing his prosthetic legs, a key part to their premeditated murder claims. Pistorius has maintained that he wasn’t wearing the prosthetic legs.

Judge Andrew Napolitano said that until today, the government’s case was very strong. He said if Pistorius didn’t have his prosthetic legs on, he couldn’t have chased her.

Napolitano said it’s unusual for the government to switch course, and even more unusual that this information would come from one of their own witnesses, a seasoned, nearly 30-year veteran.

Napolitano said the state may have to retreat from the argument of first-degree murder, though they still have many other charges against him.

“The government has a lot of evidence that this is a hot head who likes to use guns whenever he gets angry … but to retreat and change your theory mid-stream doesn’t always work out.”

Watch more of Napolitano’s analysis above.

Read more on the Reeva Steenkamp murder case:

Pistorius Weeps, Vomits in Court as Steenkamp's Autopsy Details Revealed

Report: Autopsy Reveals Steenkamp Was Beaten With Cricket Bat Before She Was Shot

GRAPHIC PHOTOS: First Look at Pistorius Crime Scene