Reports have been coming out from South Africa about the crime, which at first was reported to be in response to a possible burglary, but the police have said that the story is not true and charges are being pursued that accuse Pistorius of premeditated murder and not just simply a murder charge.
Pistorius was formally charged at Pretoria Magistrate's Court, although a family statement released said that "The alleged murder is disputed in the strongest terms," the statement read. The statement did not elaborate.
The statement also said Pistorius wanted to "send his deepest sympathies to the family of Reeva."
"He would also like to express his thanks through us today for all the messages of support he has received -- but as stated our thoughts and prayers today should be for Reeva and her family -- regardless of the circumstances of this terrible, terrible tragedy," the statement read.
Reports are coming from South Africa now about the night in question, including that police were at the house two hours before the murder.
According to national broadsheet Beeld, the police were at the house responding to a call after neighbors complained about a loud argument between Pistorius and Steenkamp. Further reports came out that Steenkamp was shot four times through the bathroom door, which would possibly put Pistroius's story of a possible robbery in question.
The events bring new light onto Pistorius's past escapades, including when he was held in jail for one night after allegedly assaulting a 19-year-old woman in 2009 after she wouldn't leave a party at his house. While the charges were dropped, it does add a new wrinkle to this case.
Pistorius is known as a gun enthusiast and he had a number of weapons in his home to protect himself from crime in the area, which has one of the highest rates in the world. Steenkamp reportedly was to speak to some high schoolers the day she died, and just before that she tweeted about women's abuse and protecting women.
According to the first report, the four bullets were to Steenkamp's head, chest, pelvis and hand. The murder took place at the Silver Woods Estate where the runner lives and it says that police and security guards were called two hours before the incident.
There is a lot that is unclear about the situation, as the police also said that there were prior domestic issues at the house, but did not elaborate further. Later on, another girlfriend of the Olympian came out in support of him.
Ex-girlfriend, Jenna Edkins, defended Pistorius in messages Friday on Twitter:
"All I am saying is let him speak, let his side be heard without jumping to conclusions," Edkins wrote. She offered "love and support" to the Pistorius family and wrote: "I have dated Oscar on and off for 5 YEARS, NOT ONCE has he EVER lifted a finger to me or made me fear for my life."