Transcript for Gunfire erupts at resort in Manila, Philippines

frightening scene playing out in Manila today. Calling it terrorism. Tonight, police on what it really was and the tourists who trampled each other to get out. Here's ABC's Alex Perez. I can hear gun shots. Reporter: It was a terror scare tonight, sending hundreds fleeing. A gunman still at large at this hour, inside a resort in Manila. Chaos and confusion as tourists trampled one another to get out. At least 21 injured according to police. Ambulances rushing to the casino and hotel. Police with guns drawn. As guests stream out into the street, many with suitcases. First responders, carrying the injured out on stretchers. Smoke seen rising above the neon sign. These people huddling together in a back room, others in this garage. The next I saw, started a huge fire. Reporter: The police chief now saying there's likely no terror link, that it was a botched robbery. Authorities reviewing surveillance footage at this hour, looking for more suspects. Alex Perez, ABC news, London.

This transcript has been automatically generated and may not be 100% accurate.