A tourist bus has been hijacked by an armed man in the Philippine capital of Manila.

Seven hostages – four adults and three children – have now been freed out of 25 people on the vehicle.

Twenty-two are said to be tourists from Hong Kong and three are Filipinos – the driver, a guide and a photographer.

The gunman, armed with an M-16 assault rifle, is a senior police inspector reported to have been sacked over robbery and drugs claims. He is demanding his job back, according to local media reports.

The bus was stationary at Luneta Park in central Manila when the gunman appeared. The vehicle stopped across an eight-lane road inside the park, and the road has been cordoned off.