A bombshell new report has claimed that Oscar Pistorius may have shot his girlfriend dead after learning that she was pregnant with his child.

If true, the revelation would be the latest in a string of twists since the death of model Reeva Steenkamp at Pistorius' home on Valentine's Day.

Pistorius claims he killed Steenkamp accidentally, opening fire after mistaking her for an intruder in his bathroom.

But prosecutors say he intentionally shot her in cold blood after the couple had an argument.

The National Enquirer reported on Monday that the argument was sparked by the news that Pistorius was about to become a father.

A source close to investigation told the supermarket tabloid: 'Police believe the preg­nancy secret she revealed is what sent Pistorius over the edge and left her dead, with bullet wounds to the head, chest, pelvis and hand.'

An autopsy on Steenkamp's remains would prove whether she was carrying a child or not, but police have said that the results of her post-mortem would not be revealed(...)