Littlestar, being in the same part of the world as yourself, i'd reckon that you should be able to find more details easily.
The Police of every state run a major 'slow down and drive safely' campaign this time of year, and they start counting the fatalities for the festive season at least a week before the 25th and as far as i know, they haven't ended it yet, they're still giving daily updates of the tally in news reports.
So if it was a fatal accident, there would have been some mention I would think.
But if you missed the one that would have given you the details to confirm/negate your feelings, why not pick up the phone and call the major newspaper in your State to get the answers you seek.
Just ask to be put through to whoever handles that area in their organisation, tell them where the accident was and ask if resulted in fatalities. They might not be at liberty to give you names, (even once family has been notified by the Police, the family can request names be withheld from publication) but they could give you other details as to if it was a fatal accident, how many lives were lost, don't know what else they could tell you.
But the only way you could really confirm anything you 'sensed' would be to talk with someone connected to those involved.
I don't know whether or not you'd want to do that though,talk to grieving family, being of a sensitive and delicate nature as it is.
Guess it might just be one of those things you can only wonder about. It might mean something, then again it might be nothing at all other than something that bothered/upset you playing on your mind.