The Straits Times' News In A Minute: July 29, 2015

In The Straits Times News In A Minute today, we look at:

*A contaminated third rail insulator was pinpointed as the cause of a power trip that shut down the entire North-South and East-West MRT lines in July.

*The body of a 22 year-old woman was found near the jetty at MacRitchie Reservoir on Wednesday morning.

*M1 has launched the cheapest mobile plan at $30 per month, targeted at consumers who do not need to buy a new handset.