Dozens of people have reportedly been injured following reports of gunfire at a resort in the capital of the Philippines early Friday morning, local time.

"Resorts World Manila is currently on lockdown following reports of gunfire from unidentified men," the resort wrote on on its Twitter account.

The Philippine Red Cross told The Manila Times that at least 25 people have been injured during the incident, which is ongoing.

Videos posted to social media show people fleeing the hotel, as well as repeated sounds of gunshots. Witnesses also reported hearing an explosion and seeing smoke rise from the top floor.

The incident began shortly after midnight local time. Emergency responders and police are at the scene, attempting to resolve the situation.

The identity and number of gunmen remain unknown. The Philippines has been rocked recently by an insurrection by Islamist militants who claim affiliation with the Islamic State. The militants have in recent weeks launched an all-out assault to seize control of the city of Marawi, a Muslim-majority city of about 200,000 people which lies about 500 miles south of Manila.

ISIS has claimed responsibility for the attack on the resort.