Sources said the decision of changing the guard of the two leaders was taken in the light of "operational efficiency" as the Central Reserve Police Force (CRPF) is deployed thickly in areas of maximum movement of these two political leaders.
Both the leaders, with Singh being under Naxal threat, will continue to be guarded under the top category of the 'Z+' VVIP security cover which entails deployment of as many as 60 armed commandos and five to six vehicles including some bullet-proof ones at a given time.
"The CRPF has been looking after the security of Singh's official residence and movements in state capital Raipur for sometime now and they have been doing the job with finesse," sources said.
The NSG, in the scenario of Singh's movement to the interiors of Chhattisgarh, had to either airlift or send its squad by road and had to undertake huge coordination with agencies like CRPF and local police which was felt was not good given the CM's threat perception.
Similarly, Lalu Prasad has now been given the CRPF cover as the force has large numbers in Bihar where the Rashtriya Janta Dal will be spending more time as Assembly polls are due in the state this year.