Nagpur: Vivek Palatkar, who had allegedly murdered five members of his family in 2018, is learnt to have attacked three of his fellow inmates at barrack number seven in the Nagpur Central Jail on Sunday. He was shifted to high security prison (called ‘anda cell’) following the incident. It’s learnt that Palatkar wrapped a brick inside a towel before swinging it towards Raju Verma, who was grievously injured. Two other inmates, Atmaram Ray and Ganesh Thakur, were also injured in the attack when they rushed to intervene. Jail authorities said Palatkar started assaulting Verma without any provocation or past rivalry. The prison guard was counting the inmates and engaged in a roll call when the attack took place. Dhantoli police have registered a case of attempt to murder against Palatkar following a complaint lodged by the jail authorities.