TAIPEI (Taiwan News) – Following damage during the April 3 earthquake, a section of the Mass Rapid Transit (MRT) Circular Line in New Taipei City will need more than one year of repairs before it can resume operations, reports said Wednesday (April 24).

The magnitude 7.2 quake that struck Hualien County also caused extensive damage outside the region. The section between Zhonghe and Banqiao was the most seriously affected, with a bus service currently replacing the trains, per CNA.

In seven spots, rails had moved 20 to 92 centimeters, with four other locations reporting displacements over 3.5 to 6 cm. While repairs have been made, engineering experts still need to complete more thorough safety reviews to find out why the damage occurred.

At a session of the New Taipei City Council on Wednesday, councilors wanted to know whether only the quake was to blame, or whether there had been mistakes with the design, since the line was built to resist even stronger quakes.

Mayor Hou Yu-ih (侯友宜) reported the investigation was still proceeding, with the next meeting of experts scheduled for Friday (April 26). He said the damage was more serious than first expected, with repairs set to last at least one year.