beams were twisted, with two construction cranes being swallowed up. A substantial chunk of the main highway running over the tunnel was also knocked out. The rescue efforts were called off on 23 April 2004 because of the low chance of survival by that point, as well as danger to the rescue teams. There was also the increasing need to stabilize the ground around the accident site to reduce the risk of further collapses. All six lanes of the Nicoll Highway were heavily damaged, rendering the road unusable. The highway re-opened on 4 December 2004 after reconstruction efforts. A committee of inquiry found main contractor Nishimatsu Construction Company (ja:西松建設) and its officers as well as Land Transport Authority officers responsible for the collapse. Several other officers and subcontractors were reprimanded and issued warnings in connection with the accident. As a result of the accident, Stages 1 and 2 of the Circle line were delayed. Stage 3 of the line, Bartley to Marymount stations opened first on 28 May 2009. The partially built station structure was abandoned, and the affected station has been shifted about 100 metres (330 ft) away from the accident site. Eventually, Nicoll Highway station started operations on 17 April 2010. On 22 March 2016, 2 SMRT maintenance trainees who were part of a group of 15 tasked to investigate a possible signalling system fault near the tracks of Pasir Ris Station were run over by a Kawasaki Heavy Industries C151 at around 11:10am, killing them. The incident took place 150m away from the station. This led to a 2.5 hour disruption from 11:10am to 1:56pm from Pasir Ris and Tanah Merah, and affected at least 10,000 commuters. On 7 October 2017, train services was disrupted between Ang Mo Kio and Marina South Pier after the tunnels between Bishan and Braddell flooded after a heavy downpour in the afternoon and a small fire was spotted between Raffles Place and Marina Bay. Train services between Marina South Pier and Newton resumed at 9:20pm on the day itself. However, train services between Ang Mo Kio and Newton were only restored around 2pm the next day, after nearly 21 hours since service was stopped, making this one of the worst disruptions in SMRT's history. The cause of the disruption was a faulty water pump that failed to pump out water from the collection pools in the tunnel. On 15 November 2017