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Did 'Blade Runner' Plan to Kill Girlfriend?

<p>New documents shed doubt on Olympian Oscar Pistorius' version of his model girlfriend's death.</p>

Oscar Pistorius' murder trial is one week away and now ballistics evidence along with interviews from neighbors suggest a very different timeline of events than the one the famed South African sprinter provided authorities the night he killed his model girlfriend, according to newly leaked court documents.

Read the complete documents here.

Prosecutors believe Pistorius and Reeva Steenkamp were arguing the night she died. That's contrary to what the man known internationally as "Blade Runner" initially told authorities.

"The accused killed the deceased because of the argument," the documents stated. "It is unknown exactly where and when the accused planned the murder but the plan existed when the accused armed himself with his firearm."

Pistorius, who admits to killing Steenkamp on Valentine's Day 2013, said he'd mistaken his girlfriend as an intruder when he fired four shots through his locked bathroom door.

"No words can adequately capture my feelings about the devastating accident that has caused such heartache for everyone who truly loved - and continues to love Reeva," Pistorius posted on his website this Valentine's Day. "The loss of Reeva and the complete trauma of that day, I will carry with me for the rest of my life."

Prosecutors reject the runner's version of events.

"The accused's version is not reasonably possibly true," prosecutors said in the court documents.

They also said the Paralympian likely was not wearing his prosthetic legs during the shooting, which differs from their original thoughts. His trial is set to begin March 3, where a single judge will decide his fate.

John Cheang contributed to this report.