The gunman who killed 38 people in a brutal casino rampage in the Philippines was seen on security camera footage firing his rifle in the air, setting fires and shooting at security forces.The so-called Islamic State (IS) has claimed responsibility for Friday's attack in Manila, but authorities say it was a botched robbery by a single gunman and there were no links to terrorism.After storming into the Resorts World Manila complex, he used petrol to torch gambling tables before fleeing to an adjoining hotel where he killed himself. The victims appeared to have died of smoke inhalation as they hid from the gunman, police said.At a news conference on Saturday, authorities described him as an English-speaking man in his 40s, 6ft tall and armed with an assault rifle.The taxi driver who dropped the man off at the casino said the man also spoke fluent Tagalog and appeared normal during the ride, said Manila police chief Oscar Albayalde.He said terrorism was unlikely because the gunman did not shoot anyone.«He could have shot everybody there,» Albayalde said.