MEERUT, March 11 -- A day after senior Bharatiya Janata Party (BJP) leader Gulfam Singh Yadav died after an unidentified man allegedly injected a poisonous liquid into his stomach in a village in Uttar Pradesh's Sambhal district, police on Tuesday said post-mortem examination could not confirm presence of poison in his body even as an FIR was registered against four named and two unknown people in connection with the crime.

Giving this information, Sambhal SP Krishna Kumar Bishnoi said: "Police are probing the case and viscera have been preserved for forensic analysis."

"On basis of the complaint received from the son of the deceased on Tuesday, an FIR has been registered against four named and two unknown people with Junawai police sta...