As a result of the failed revolution, 13,000 people were arrested, 4,500 imprisoned, 1,308 interned, and 823 exiled to the Digul region of Western New Guinea; several people died in captivity. Many non-communist political activists were also targeted by colonial authorities under the pretext of suppressing the communist rebellion, and the party was outlawed by the Dutch East Indies government in 1927. The PKI went underground, and Dutch (and, later, Japanese) surveillance ensured that it was never a disciplined or coherent organisation for the remainder of the pre-war period.