Dutch families win right to test DNA of sperm bank doctor

Some of the donor children implicated in the case speak to the media

But Superintendent Apolinario told the BBC the police had not confirmed his nationality.

Authorities have also told reporters that the man appeared to be "mentally disturbed". Resorts World Manila has called the casino shooting a "cowardly act of a deranged mind".

Police say the gunman was acting alone, unconnected to any Islamist group. Over the last week militants allied to IS have been engaged in street battles in the far south of the Philippines.

How did so many people die?

Police said the suspect poured petrol over the furniture and rugs, causing them to catch fire immediately. Although the fire was not large, thick smoke caused the deaths.

Those who escaped the casino have said they saw smoke filling the complex.

One woman told AFP that she had received a call from her daughter as the attack happened. "Our daughter called us past midnight saying she was in the VIP section of the casino and there was smoke and they were suffocating," Gil Yongco said.

Resorts World Manila chief operating officer Stephen Reilly has told reportersthat fire safety equipment worked, and that there was "proper ventilation".

More than 50 people have been sent to a hospital to be treated for injuries, including fractures.