Hong Kong will cancel visa-free arrangements for Philippine official and diplomatic passport holders in its first sanctions against a foreign state.
The measure, imposed in retaliation for the country's failure to respond all of the city's demands after the 2010 Manila hostage bloodbath, takes effect on Wednesday.
While Chief Executive Leung Chun-ying said it came after discussions between the two governments this week bore no fruit, international-relations experts said the cancellation could be related to tension between Beijing and Manila over the South China Sea.
Survivors and victims' relatives have been asking for a formal apology, compensation, punishment of responsible officials and improved tourist safety.
They rejected an apology from Manila mayor Joseph Estrada in August as insincere, but found responses to the other three requests satisfactory. A black warning - the highest - against travel to the Philippines remains in force.
Leung said cancellation of the 14-day visa-free arrangements for the two categories of passport-holders, of whom up to 800 visit Hong Kong each year, was the just the first phase of sanctions. Existing accredited Philippines consular officials will not be affected by the measures.
He said the government received the latest message from Manila on Monday, but discussions were fruitless.
Foreign Ministry spokeswoman Hua Chunying said Beijing supported Hong Kong in its efforts regarding the hostage crisis. The Philippine Consulate in Hong Kong did not respond to inquiries last night but a formal response from Manila is expected today .
On August 23, 2010, sacked policeman Rolando Mendoza took 22 Hong Kong tourists and three Filipinos captive on their coach. He shot dead seven tourists and their guide before being killed in a bungled rescue.
Watch: Philippine bus hostage-taking incident
Veteran China watcher Johnny Lau Yui-siu, said Beijing must have endorsed the decision as Hong Kong had limited power in matters of foreign relations.
Dr David Zweig, chair professor of the social science department at the University of Science and Technology, said Beijing "certainly" would not have opposed the sanction decision, adding: "Beijing is not very happy with the Philippines these days."
But he said sanctions could be unwise if talks are continuing.
Tse Chi-kin, brother of killed tour guide Masa Tse Ting-chunn, and injured survivor Yik Siu-ling welcomed the move. "At least it's an unprecedented step to show the Hong Kong and Beijing governments do care," Tse said.
In November, the Philippines gave an undisclosed amount to Yik, who had facial reconstruction surgery costing HK$1 million in Taiwan to repair damage from a bullet through her jaw.