( CNN ) -- A deadly earthquake that struck Taiwan on Wednesday may have occurred on a `` blind fault '' and that fault could produce a far stronger earthquake in the future , the head of the country 's Seismology Center said . Wednesday 's 6.1-magnitude temblor killed one person and left 19 others injured , according to reports from the state-run Central News Agency . The U.S. Geological Survey put the quake 's magnitude at 6.0 and its epicenter at a depth of 20 kilometers ( about 13 miles ) . Aftershocks from magnitude 4.3 to 3.7 were reported . Seismology Center Director Kuo Kai-wen said Wednesday 's quake may have been the third large quake on a blind fault east of the Chelungpu Fault , which produced a 7.3-magnitude quake in 1999 that left more than 2,400 people dead . Blind faults are not on the country 's fault maps , Kuo said . Interactive : Measuring the magnitude of earthquakes . `` Those faults can not be seen with the naked eye and can only be determined through special instruments or exposed by earthquakes , '' he said in the Central News Agency report . Besides Wednesday 's quake , temblors of magnitudes 6.7 and 6.1 struck the area in 2000 and 2009 , respectively , pointing to the existence of the blind fault , Kuo said . He said the blind fault may be more than 100 kilometers ( 62 miles ) long , making it capable of producing a quake of more than 7.0 magnitude , which is could do serious damage . `` The longer the fault , the stronger the earthquake , '' he said . In Wednesday 's quake , a 71-year-old woman was killed when a temple wall collapsed on her , the news agency reported , citing Taiwan 's National Fire Agency . The 19 injuries included students who were hit by books falling from shelves at local schools and a plant worker hit by a falling piece of machinery , the report said . Other damage included cracks in buildings and goods shaken from store shelves , reports said . The temblor stopped service on 90 trains , affecting 17,000 passengers . Interactive map : World 's biggest earthquakes since 1900 .
`` Blind fault '' may have produced 6.1 temblor . Fault may be able to produce much stronger quake , Taiwanese official says . Comment: