Irked by the tweet that ridiculed him, Bassi termed Kejriwal and journalist Ravish Kumar as "self-styled appraisers" overlooking the fact that the latter had left social media last year itself due to the menace of online abuse.
When contacted, Kumar said he was not perturbed but surely "surprised" that the person behind the parody handle managed to bluff the top cop.
Bassi's bluster came in response to a tweet that questioned his "commitment" towards the khaki and wondered whether his loyalty was for the uniform or "knickers", a veiled reference to RSS.
"When Bassi says that his commitment is towards the khaki, then it's not clear whether he is referring to the uniform or knicker," the tweet in Hindi read which was retweeted by Kejriwal.
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Sources in the Delhi Police team that handles social media admitted that they later found out that the tweet was indeed from a parody account although they refused to elaborate further.
Last Sunday, Home Minister Rajnath Singh had sparked a row saying that the event organised at JNU to protest against the hanging of Parliament attack convict Afzal Guru had the backing of Lashkar-e-Taiba founder Hafiz Saeed.
Even though the Home Ministry clarified that Singh's statement was based on inputs from different agencies, it was reportedly made in the wake of the posts on the fake Saeed Twitter account.
"Bassi only responds to Fake Accounts & springs into action on Fake Tweets, Bassi Jaisi Koi Nahi" and "Fake Hafiz Syed tweet, fake video of #JNU and now fake Ravish NDTV tweet, Bassi ji Bass karo" were some of the other tweets.
The Police Commissioner has been facing intense flak for Delhi Police's alleged mishandling of the JNU row.
The last tweet from Kumar's verified account was on August 22 last year. He had stopped tweeting over the "silence" of liberals against online abuse.