Madhya Pradesh Chief Minister Shivraj Singh Chouhan on Thursday announced that a judicial enquiry will be conducted into an "encounter" of eight SIMI activists.Justice S.K. Pandey (retired) would conduct the probe.The eight undertrials were killed by police in an alleged encounter near here hours after they escaped from Bhopal Central Jail after murdering a security guard.Opposition parties, including the Congress, raised questions on the encounter after video clips showed a jawan opening fire on one of the men, as he lay motionless on the ground.