NEW DELHI: Leaders of India`s Cockroach Janta Party (CJP) were detained on Tuesday after they jumped barricades to enter a historic Delhi site popular for protests, demanding that the chief election commissioner resign over a revision of voter lists.

CJP supporters and opposition groups have held almost daily protests this month to demand commissioner Gyanesh Kumar stand down over the revisions critics say favour Prime Minister Narendra Modi`s Bharatiya Janata Party (BJP) by removing the names of millions of voters.

Delhi police announced on Monday that the Jantar Mantar open air observatory was no longer designated as an official protest site, and said three new venues had been identified.

The CJP said its leaders Ashutosh Ranka, Saurav Das, and Ajinkya Shinde were among about 20 people who `sneaked` inside the observatory to `reclaim` it and were detained.

A CJP livestream showed about a dozen people jumping a gate and barricades to reach the site, where they waved the Indian flag and chantedslogans before police detained them.

Sporadic demonstrations broke out elsewhere on Tuesday, including in Delhi`s business hub Connaught Place, where television footage showed dozens of members of the stu-dent unit of the main opposition Congress party being hauled into buses by police as they attempted to stage a sit-in protest.

A small group of protesters, including from left-wing student groups, triedto breach police barricades during a march in the eastern city of Patna.

Nearly 150 journalists gathered at the Press Club of India in New Delhi to march in protest against the detention ofreporters covering events over the weekend.

The demonstrations erupted after theIndianExpressnewspaperreported last month that Kumar`s two deputies raised several concerns internally about voter list revisions, registration procedures and digital systems.

The change, which started last year, removed over 130 million names more than the population of Japan from voter lists, including 28 million who died, 63 million who relocated, and 30 million who could not be traced.

The youth movement, which has mobilised protests in recent months against issues ranging from government school infrastructure to jobs, is among the biggest political challenges to Modi and his BJP in his 12 years in power.

A weeks-long sit-in by its supporters at Jantar Mantar earlier this year forced the resignation of Education Minister Dharmendra Pradhan over exam paper leaks.-Agencies