Johannesburg - Oscar Pistorius's decision to go to a night club while still on trial for murder was “unwise” but it was done because he is “lonely and alienated”, his family said on Wednesday.

Pistorius was involved in an argument with businessman Jared Mortimer at a club in Sandton at the weekend. Both men accuse each other of starting the altercation.

“Oscar is grappling with an extreme level of emotional pain that is manifesting itself in some of his recent unwise actions and choices,” Pistorius' uncle has said in a statement.

“Those of us closest to him have been witness to his escalating sense of loneliness and alienation. This, we believe, is underlying some of his self-harming behaviour.” - Reuters