New Delhi: A case has been registered by the Delhi Police in connection with the protest held outside the Indian High Commission in London on March 19.


News agency PTI reported officials as saying on Friday that a case was registered by the special cell under the Indian Penal Code, Unlawful Activities (Prevention) Act and the Prevention of Damage to Public Property Act as it involves unlawful activities carried out by certain people holding Indian nationality abroad.


This was done after the Ministry of Home Affairs directed the Delhi Police to take legal action on the receipt of a report from the Ministry of External Affairs over the incident at the Indian High Commission on March 19.


Last Sunday, the tricolour flying atop the Indian High Commission in London was grabbed at by a group of protesters waving separatist Khalistani flags and chanting pro-Khalistani slogans, leading to an arrest related to the violent disorder.


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On Wednesday, in response to the protest, the Indian High Commission unfurled an additional humongous tricolour on the roof of its building. Officials from the mission said the "attempted but failed" attack had been foiled and that the tricolour was now flying "grander".


Meanwhile, Metropolitan Police police said that two members of security staff sustained minor injuries, however, they did not require hospital treatment.


An investigation was launched into the incident.


India last Sunday night summoned the British deputy high commissioner and demanded an explanation for the absence of security. 


The Ministry of External Affairs in a strongly-worded statement said that India finds the UK government's indifference towards the security of Indian diplomatic premises unacceptable.


United Kingdom's Foreign Secretary James Cleverly on Wednesday responded to the demonstrations staged by Khalistan supporters as around 2,000 of them descended upon the Indian High Commission in London waving Khalistan flags, chanting slogans amid a heightened security presence and barricades.


The banned terrorist organisation, Sikhs For Justice, is conducting a so-called "Referendum 2020" amid a crackdown on pro-Khalistan leader Amritpal Singh in Punjab.