An FIR under section 302 (murder) of the IPC was registered against Somnath, Station House Officer of Sirhind police station, Kanwaljit Singh said.The reason behind Manish's murder is not known yet, he said, adding that investigations are on in the case.Notably, Sood was in the news few years ago when he along with few others had allegedly assaulted Jagtar Singh Hawara, convicted of assassinating former Punjab Chief Minister Beant Singh, in the district court premises in Chandigarh in 2011.