Singapore has barred British trip-hop band Massive Attack from performing in the city-state after two members displayed a Palestinian flag during a concert.

Following an investigation, police issued stern warnings to the two members and banned them from re-entering Singapore, determining they had breached rules against displaying foreign emblems without permission. The band has been prohibited from future performances in the country.

Regulators are reviewing whether the concert violated licensing conditions. The investigation was prompted after video emerged showing the flag being raised on stage during the performance, with the audience responding with cheers.

Singapore generally prohibits public display of foreign national emblems without a permit. Authorities have cautioned against allowing the Israel-Hamas war to intensify communal tensions in the multiracial nation, where Muslims comprise 15% of the population.