The last 'Sarbat Khalsa', a large congregation of Sikhs, was held in 1986.
However, Shiromani Gurdwara Parbandhak Committee and Akal Takht, Sikhism's highest religious seat, have refused to term it as 'Sarbat Khalsa', which is being held at Chabba village about 10 kms from the holy city.
The congregation is being held near 'samadh' (memorial) of Bhai Naudh Singh on the Amritsar-Tarn Taran Road under overcast conditions.
"Para Military Forces, police personnel and Rapid Action Force (RAF) are keeping a tight vigil at all important places," Police Commissioner J S Aulakh said.
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The 'Panj Pyaras' (five Sikh preachers) have backed the gathering of the Sikhs. The five Sikh preachers had courted controversy last month by summoning Sikh clerics before the Akal Takht for pardoning Sirsa dera chief Gurmeet Ram Rahim Singh.
"Large numbers of Sikhs, including from abroad have reached," SAD (Amritsar) president Simranjit Singh Mann said at the day-long event.
Mann said that names of new jathedars are likely to be proposed which included jailed leader Jagtar Singh Hawara, Devinderpal Singh Bhullar and Avtar Singh Bheora.
Hawara is a Babbar Khalsa militant. He was the mastermind in the killing of Punjab Chief Minister Beant Singh in 1995 and is serving sentence.
"Besides framework for appointing jathedars, their role and authority and bringing transparency in their functioning is expected to be brought up before the community," Mann said.