30 people have been detained by police for their suspected involvement in a public assembly without a permit on January 21.
The group, comprising men and women aged between 21 and 56, had gathered at Sembawang Park with some holding placards.
The Police said in a release that their preliminary investigations revealed that they were there to show their support for Jallikattu and the protest in India against its ban.
It is not clear who the organiser of the event is, but the Singapore police responded that foreigners working or living in Singapore have to abide by local laws and that they would take firm actions against anyone flouting such laws.
Jallikattu, which means “bull-taming,” is a centuries-old festival associated with Pongal celebrations in Tamil Nadu where bulls are let loose and young men compete to subdue them.
This socially explosive issue has created some controversy in India when the Supreme Court outlawed the Jallikattu festival last year after a plea by animal rights groups, which have denounced the event as cruel. The Supreme Court of India has revoked an exemption to the Jallikattu practice just before the 2016 Pongal festival and have taken to the streets to challenge the ban.
Many in Tamil Nadu, India have been protesting against the ban. As thousands of protesters gathered in state capital Chennai and other cities , the tensions were prompting Tamil Nadu's chief minister O Panneerselvam to travel to New Delhi to ask Prime Minister Narendra Modi to overturn the ban. Modi did so on January 20.
The Singapore police reminded the public in its press release that organising or participating in a public assembly without a police permit is illegal in Singapore.