Murder-accused paralympian Oscar Pistorius thanked his "loved ones" on social networking site Twitter on Friday afternoon after final arguments were concluded in the High Court in Pretoria.

Murder-accused paralympian Oscar Pistorius thanked his "loved ones" on social networking site Twitter on Friday afternoon after final arguments were concluded in the High Court in Pretoria.

"Thank you to my loved ones and those that have been there for me, who have picked me up and helped me through everything," @OscarPistorius tweeted around 4.20pm.

Defence and State lawyers delivered their final arguments on Thursday and Friday, after which Judge Thokozile Masipa said she would hand down judgment in the matter on September 11.

Pistorius was charged with premeditated murder following the fatal shooting of his girlfriend model and law-graduate Reeva Steenkamp.

He shot her through a locked toilet door at his Pretoria home on Valentine's Day last year.

He claimed he mistook her for an intruder.