| Power to cancel pass |
| 17. If the Controller is satisfied that the holder of a pass issued under regulation 9, 10, 11, 12, 13, 14 or 16 is a prohibited immigrant, or has failed to comply with the conditions specified in the pass or the purposes for which the pass was issued, or that his presence in Singapore is undesirable or would be prejudicial to public security in Singapore he shall cancel the pass. |