New Delhi: The CBI has filed two chargesheets in the West Bengal post-poll violence cases, officials said on Friday, noting that one chargesheet was filed within nine days of taking over the case’s investigation, while another was filed in just six days.In a chargesheet filed on Friday, the CBI has named four people, Tuntun Chaudary, Chandan Singh, Lalan Singh and Animesh Paul, saying they allegedly hurled a bomb at a house in North 24 Parganas district in which a man was killed on June 6.The agency registered the case on August 25.The second chargesheet that was filed by the agency on Thursday was in connection with a body found in a paddy field in Nalhati in Birbhum district. The victim was identified as a resident of the nearby Jagdhari village.The agency registered a case on August 28, they said, adding the CBI has charged Mainuddin S.K. and Mohammed Imran in the case.The agency has recently registered two cases of two murders – one in South 24 Parganas and another in North 24 Parganas – in which the victims were allegedly attacked by sharp objects leading to their deaths, the officials said.These take the tally of cases related to post-poll violence in the state, being probed by the agency, to 34, they said.