One possibility is that you heard it on a local ABC radio station, rather than on their national broadcast.
Some ABC radio stations in a cost-cutting move have been using generic news feeds from the same company which provides their local ABC traffic reports. The reporters might even identify themselves as ABC reporters for the individual station. That makes it difficult to differentiate them from real ABC reporters.
If that is the case, it would then be possible, though probably unlikely that the news/traffic service company reporter erred or misread a report off the wire.
Someone else on this thread also heard the report.
Well, this was the national ABC feed. You know, with the short, music intro. I dont recall the announcer's name, but the person was a female's voice that I recognize often on ABC radio news.