SINGAPORE - A train fault at Admiralty station caused delays for commuters taking the North-South Line (NSL) on Monday (Feb 13) morning.

The delays affected the line's south-bound stretch from Jurong East to Ang Mo Kio stations, operator SMRT said in a tweet at 7.58am.

It said to expect additional travel time of 20 minutes.

Free regular bus services between Woodlands and Yishun stations were activated due to the fault.

Normal service resumed around 30 minutes later at 8.25am, although SMRT said to expect trains to travel slower.

This comes less than a week after the NSL was hit by a signalling fault, which caused a train to be withdrawn from service, last Friday.

Commuters complained of slower and jerkier trains, and experienced additional travel time of up to 30 minutes.