The Centre has withdrawn Special Protection Group (SPG) cover for former Prime Minister Manmohan Singh, though he continues to be a Z-plus protectee. As per the Ministry of Home Affairs(MHA) sources, security cover review is a periodical and professional exercise based on threat perception that is purely as per professional assessment by security agencies.

from Times of India https://timesofindia.indiatimes.com/india/government-withdraws-spg-cover-to-ex-pm-manmohan-singh/articleshow/70836553.cms