American investigators focusing on toilet door in Pistorius murder case

Forensic experts working double-amputee Olympian Oscar Pistorius have visited the upscale villa where he shot and killed his girlfriend and examined the toilet door through which the fatal shots were fired.

According to News.com.au, the South African Police Service said in a statement on Thursday that the specialists made prior arrangements with police to visit the athlete's house on Monday in Pretoria, where model and reality TV star Reeva Steenkamp was shot and killed on February 14.

Pistorius goes on trial on March 3 accused of premeditated murder and he was given seven months to put his case together after being indicted on charges of murder and illegal possession of ammunition in August, the report said.

The visit suggests that the toilet door will form a key part of the evidence in the trial, the report added.

The height of the bullet holes in the door and trajectory of the bullets fired by Pistorius could prove whether or not he was wearing his prosthetic legs, the report further said.

Pistorius says he shot in fear at what he thought was a dangerous intruder, according to the report.

It was the second time investigators acting for Pistorius had visited the scene accompanied by the police's team, the statement said.

Pistorius faces a possible life sentence with a minimum of 25 years in prison if he is convicted of murder with premeditation, the report mentioned.