The test for 'reasonably necessary' arrest under s 99(1)(b) of LEPRA is subjective (whether the officer was satisfied), subject only to review for manifest unreasonableness, and continued courteous questioning of an arrested person who declines to answer does not render the detention unlawful during the investigation period.
The full text is available to signed-in members, including the 10 later cases that cite this judgment.
2 of the 10 citing cases carry a classified treatment. How each court treated it is available to signed-in members.