A 7.5 magnitude earthquake rocked Taiwan on April 3 in what officials said was the strongest tremor to hit the island in at least 25 years. The quake killed at least four people one person, injured more than 700 people and sparked a tsunami warning for southern Japan and the Philippines. More than 50 people were injured and many others were trapped in buildings in Hualien City, said officials. At least 26 buildings, with more than half of those in Hualien, had collapsed due to the strong tremor.Taiwan television stations showed footage of buildings at precarious angles in Hualien, where the quake struck just offshore. The earthquake also triggered rock falls and landslides in the mountainous Hualien County.