BHOPAL: Madhya Pradesh home minister Bhupendra Singh on Monday alleged a well planned conspiracy by rival political leaders to kill chief minister Shivraj Singh Chauhan during his 'Jan Ashirwad Yatra' in Sidhi, on Sunday night. Singh said after probe into the incident, eight persons booked by the police were identified as Congress workers including the district IT Cell in-charge Pankaj Singh Chauhan."We condemn attack on chief minister by the Congress workers in Sidhi. Probe into the matter revealed that it was a well planned conspiracy by some Congress leaders to assassinate the chief minister by attacking his chariot when the yatra reached Sidhi district ", home minister Singh told reporters in Sagar.The high-tech chariot of chief minister Chouhan, who is touring the state ahead of assembly polls, was attacked by some miscreants in Churhat area, which is the assembly constituency of Leader of Opposition Ajay Singh, on Sunday night. However, the chief minister escaped unhurt in the attack but, the windows of the chariot were smashed.Later, addressing a public gathering Chouhan alleged involvement of Congress workers led by LOP Ajay Singh, in the incident. He also dared Singh to come in the open and fight with him.“Ajay Singh, if you have strength come in open and fight with me,” challenged the chief minister adding, "I am physically weak but I won't be bogged down by your deeds. People of the state are with me.”Condemning the incident, home minister Singh said that the attack has exposed the Congress as to what level a party can go to fetch power in the state. He said the attack also shows who Congress was nervous with the overwhelming response to chief minister's Jan Ashirwad Yatra across the state.