A video of a 90-year-old woman being beaten up by her granddaughter in Kannur in north Kerala has gone viral on the social media, following which police registered a case and arrested her on Monday. Police said Deepa (40), the elderly woman's granddaughter, was booked under various sections of IPC, including gain by unlawful means of property to which the person is not legally entitled. The Kerala State Human Rights Commission has suo motu registered a case and sought report from the district police chief in a month's time.