Earlier quoted context omitted.
By always talking only about non specified "problems" and getting people not to expect any further information it is easier to hide when it's a suicide.
I cannot speak for other countries; but in Denmark, they are always crystal clear when the train has hit someone (»personpåkørsel« in Danish); and even when they suspect they might have hit someone; so when I say "technical problems", I mean technical problems. Besides, I am not sure I see the point of hiding when they've hit someone?
The official reason for the delay, according to the Ruter app, the info screens and announcements over the PA system, was "signalfeil" ("signal error"). So at least in Norway, we clearly have a culture of describing all sorts of problems, including completely non-technical problems like someone having a medical emergency, as a problem with the train signals.