The British band Massive Attack said its members were detained by Singapore police and "isolated and separately questioned" after the two performers raised a Palestinian flag at their concert in the city-state last Wednesday.
In a statement posted on Instagram on Sunday, the band said they were "surprised and disappointed" that the entire band was detained and questioned.
Several members had their hotel rooms searched and passports temporarily confiscated, the post said.
The trip-hop band has two members, Robert Del Naja and Grant Marshall, both British nationals, who unfurled the flag and held it up as audience cheered "Free Palestine!", a witness said.
Police said last Friday the band's actions "could potentially harm the racial and religious harmony in Singapore" and that two band members were issued with stern warnings and barred from re-entering Singapore. Police did not name the two band members.
