Security of the Madhya Pradesh chief minister Shivraj Singh Chouhan has been beefed up in wake of a threat letter.

Though the letter (written in Hindi) bore no address, the sender’s name was stated as LeT, said IG A K Soni adding a team has been assigned to probe the matter. Prima facie it seems to be a fake letter dispatched on the behalf of LeT, still we are investigating it, he said.

The letter was posted at the official address of the Jhansi station superintendent (SS), who subsequently forwarded it to MP PHQ.