Issuing new security guidelines to states in the wake of an “all-time high” threat to Prime Minister Narendra Modi, the Home Ministry has said that not even Ministers and Officers will be allowed to come too close to the Prime Minister unless cleared by the Special Protection Group (SPG).

The Home Ministry communication cited an “unknown threat” to Mr. Modi. He is the “most valuable target” in the run-up to the 2019 general elections, officials privy to the development said.The SPG is believed to have advised Mr. Modi, who is the main campaigner for the ruling BJP, to cut down on road shows, which invite a bigger threat, in the run up to the 2019 Lok Sabha polls, and instead address public rallies, which are easier to manage, an official said.

The close protection team (CPT) of the Prime Minister’s security has been briefed about the new set of rules and the threat assessment and instructed them to frisk even a Minister or an Officer, if necessary.

The Prime Minister’s security apparatus was reviewed threadbare recently after the Pune Police told a court on June 7 that they had seized a “letter” from the Delhi residence of one of the five people arrested for having alleged “links” with the banned CPI (Maoist), another official said.

The purported letter allegedly mentioned a plan to “assassinate” Mr. Modi in “another Rajiv Gandhi-type incident”, the police had told the court.

Besides, during a recent visit to West Bengal, a man was able to break through six layers of security to touch the Prime Minister’s feet, sending the security agencies into a tizzy.

Following the two developments, Home Minister Rajnath Singh held a meeting with National Security Advisor Ajit Doval, Union Home Secretary Rajiv Gauba and Director of Intelligence Bureau Rajiv to review the PM’s security .

In that meeting, the Home Minister had directed that all necessary measures to be taken in consultation with other agencies to suitably strengthen security arrangements for Mr. Modi.

Maoist-hit states like Chhattisgarh, Jharkhand, Madhya Pradesh, Odisha, West Bengal were termed as sensitive by the Home Ministry and the police chiefs of these states were told to be extra careful when the Prime Minister visits their states, the official said.

Security agencies are believed to be specially monitoring the Kerala-based Popular Front of India (PFI), an outfit that the government believes is a front for radical groups.