A resort in Manila was placed on lockdown early Friday following reports of gunfire and explosions at the hotel and casino complex in the Philippine capital.
Witnesses told police that gunmen wearing masks and black shirts opened fire inside the hotel, ABS-CBN News reports.
One employee, who described himself as a casino dealer, said one of the attackers poured flammable liquid on one of the casino tables and set it on fire, ABS-CBN said.
Philippine police chief said there was no evidence that the casino attack is terrorism and no confirmed reports of gunshot wounds. Local media reported dozens of people were injured.
A member of the local Red Cross team said at least 25 people were injured, The Manila Times reports.
The newspaper quotes Fernando Atienza, a local Red Cross team leader, as saying many of the victims suffered serious injuries from jumping from the second floor of the hotel.
"Resorts World Manila is currently on lockdown following reports of gunfire from unidentified men," the resort posted to its Twitter feed. They tweeted asking for prayers a short time later.
The Company is working closely with the Philippine National Police to ensure that all guests and employees are safe.— Resorts World Manila (@rwmanila) June 1, 2017
In Washington, President Trump, however, issued a statement saying the White House was monitoring the situation. "It's really very sad what's going on throughout the world with terror," he added.
Resorts World Manila, which bills itself as the country's largest casino resort, is located in Pasay City, which is part of metropolitan Manila.
The incident erupted at a time of unrest by extremist groups elsewhere in the country. On May 23, President Rodrigo Duterte declared martial law in Mindanao to combat what he said was a rebellion by Islamic State radicals in that southern Philippines island.