London - Oscar Pistorius captured his first gold medal of the Paralympics in London when he helped South Africa win the 4x100m relay in a world-record time at the Olympic Stadium.

The double amputee, known as the “Blade Runner”, anchored the team home in a time of 41.78 seconds. South Africa set the previous record at 42.50 in February.

It is Pistorius's fifth Paralympic gold across three games, having won the 200m in Athens in 2004 and the 100m, 200m and 400m in Beijing in 2008.

He has already won a silver in the 200m in London after being edged by Alan Oliveira of Brazil in Sunday's final.

Pistorius will go for gold in the 100m on Thursday after qualifying on Wednesday night, and will defend his 400m title on Saturday. - Sapa-AP