"Strongly condemn attack on AAP office by BJP/Sangh activists. BJP as usual is disassociating itself. Part of their strategy.
"Sangh has more than 150 organisations and all have their roots in Sangh. One hand strikes and other hand applies Balm ! Multi Faced Party ! Doesn't it remind us of the Ramayan Character who had 10 Faces and one Body ," Singh, a known detractor of RSS and BJP, has said in his tweets.
Singh's remarks on Twitter last night came after activists of a fringe right-wing group attacked and vandalised the Aam Aadmi Party headquarters in Kaushambi, protesting against the controversial remarks of its senior leader Prashant Bhushan on the presence of security forces in Jammu and Kashmir.
Armed with sticks and bricks, about 40 activists of Hindu Raksha Dal had stormed the AAP office near the residence of Chief Minister Arvind Kejriwal and broke the door panes and flower pots in its frontyard.
The attack drew charges and counter-charges with Kejriwal claiming that it was meant to kill him and Bhushan.
Bhushan, a noted lawyer, who had stoked a controversy suggesting a referendum on the presence of security in the Kashmir valley, had claimed that BJP was "frustrated" with the mounting popularity of AAP and had incited one of its sister organisations in the attack.
BJP hit back by saying that while it condemned the violence, Bhushan should also mind his tongue when speaking on sensitive issues like Jammu and Kashmir, which is an inalienable part of the country.