Sources said that the person was identified as Sandeep Kumar who narrated his problem to CM Amarinder Singh for a few minutes and handed over some documents.
He also urged Navjot Sidhu to exercise caution in dealing with Pakistan.
The police booked school principal Saroj Sharma, teacher Poonam and school director Prabhu Dutt, but no arrest has been made.
Punjab has the third-highest number of arms license holders in the country with 3.59 lakh active gun licenses, mostly issued during the two decades of militancy.
Sessions judge Gurbir Singh accepted the closure report presented by the state vigilance bureau and discharged all the 31 accused.
In reference to a historic 'blacklist' of some diaspora Sikhs over anti-India activities, the chief minister stressed that he was keen to 'start afresh' and that no such list remains in operation.
Amarinder was in Birmingham, to address the Indian diaspora on the sacred occasion of the 550th birth anniversary of Sri Guru Nanak Dev.
On November 20, Punjab Finance Minister Manpreet Singh Badal had attended the meeting of the Empowered Committee of state finance ministers at New Delhi.
The mobile application '2020 Sikh Referendum' had reportedly asked the general public to register themselves to vote in the 'Punjab Referendum 2020 Khalistan'.
Amarinder Singh will hold talks to set up special courts to resolve cases of 'Proclaimed Offenders' settled abroad
NRIs expressed the concern that many of those who had immigrated abroad were unable to visit Punjab and pay their respects at the Golden temple and other holy places as they had been declared POs.
The Chief Minister made the announcement at a function held at the Punjab Technical University.
The bus ride lasted less than 5 minutes, but, an intriguing topic broke the ice between Imran and Amarinder.
The Punjab CM also said he hoped Pakistan would understand that India wants friendly relations with it.
He said the development raises serious concerns about the security threat posed to Punjab.
He urged the central government to reconsider its decision, particularly in view of the security scenario currently prevailing in the country.