Two days before the four Nirbhaya case convicts are to be hanged, one of them has petitioned a Delhi court to put the execution on hold. This is the latest in a series of petitions filed by the convicts in their attempts to put off their death sentence. Akshay Singh has gone to the Patiala House court for a stay on the February 1 hanging. The Supreme Court will today also hear his curative petition challenging his death sentence.