In a statement, Kelantan police chief Yusoff Mamat said urine tests revealed that five of them were positive for drugs.

“Preliminary investigations at the scene found that their purpose was to hand over several old items before they were all detained.

“All of the suspects have been remanded for four days until this Saturday,” he said, adding that investigations were ongoing.

The case is being investigated for participation in an unlawful assembly and carrying or possessing weapons.

Yesterday, police arrested 13 people including a woman and three Orang Asli men for gathering in front of the palace at about 11.40am.

Cops seized several sharp weapons from some of the suspects, including a keris, spear, and sword.

Police also confiscated wooden sticks, bamboo canes, a copper teapot, copper cups, coins of various currencies and a yellow songket.