SMRT has enforced a speed restriction of 40km/h today on a stretch of the North-South Line that is affected by a rail crack - the third such incident to be reported in recent weeks. According to The Straits Times, repair works to rectify the problem will be carried out by the rail operator after operations on Thursday night.

Southbound MRT services between Woodlands and Ang Mo Kio were delayed by as much as 40 minutes from 6:25am today morning which has since been reduced to 15 minutes. According to an SMRT spokesman the crack was detected between Yio Chu Kang and Ang Mo Kio stations, and like previous incidents, G-clamps have been used to temporarily stabilise the affected area.

Rail cracks are a rare occurrence in Singapore with an average of only one crack reported annually, before the recent slew of incidents.