Hong Kong police have admitted deploying officers disguised as anti-government protesters during mass unrest that rocked the city on Sunday.
Some officers disguised themselves as “different characters”, a spokesman said, adding that the “decoy operation” had targeted “extreme violent rioters”.
It comes after video surfaced showing suspected undercover officers making arrests during Sunday’s clashes.
Protesters have called for an inquiry into the actions of the police.
Meanwhile, flights have been suspended at Hong Kong’s international airport, the airport authority said on Tuesday, citing disruptions caused by anti-government protests.
Tuesday’s suspension comes a day after a pro-democracy protest brought the air transport hub to a standstill.
Hong Kong’s Chief Executive Carrie Lam says weeks of anti-government protests are damaging the rule of law.