Cyanide Mallika, a serial killer who was housed in the next cell to AIADMK chief Sasikala at the Parappana Agrahara prison, has reportedly been shifted to a prison in north Karnataka. According to reports, it was earlier alleged that Sasikala’s life was under threat. The prison officials have said that Mallika, who had been accused of killing six women, was friendly with Sasikala at the jail.