Oscar Pistorius arrives on the track before his men's 200m T44 classification heat at the Olympic Stadium at the London 2012 Paralympic Games in this September 1, 2012, file photograph. The athlete has cancelled all future races as he shifts his focus to the legal proceedings against him.

Johannesburg - Oscar Pistorius's agent has cancelled all future races the athlete was contracted to take part in and says his “key focus” now is defending himself against a murder charge.

Peet van Zyl says there is “no option” but to cancel Pistorius's track dates indefinitely “to allow Oscar to concentrate on the upcoming legal proceedings”.

Pistorius was arrested and charged with the Valentine's Day shooting of his model girlfriend Reeva Steenkamp.

He is being held at a police station in Pretoria, where agent Van Zyl visited him on Sunday before announcing that the double-amputee Olympian's track career is now on hold.

Van Zyl says Pistorius's sponsorships, including with big-name brands Nike and Oakley, are safe for now. He says “all parties are supportive and their contractual commitments are maintained”. - Sapa-AP