A few things I am curious about on this case:
-why did the mum return home to raise the alarm (presumably there would have been a few people about on 10am on a Saturday?), plus she would have passed many other homes and people with cell phones etc. This is a busy park, even if she was on the walking trail to the north and closer to her home (Perth St?), I can't imagine that she didn't encounter one other person.
-I'm wondering if she left the stroller at the park while she ran home? If she did return home with the stroller, this would be a strange reaction...
There may be cultural differences that would explain her not turning to strangers to help...
I am trying not to be too suspicious here, as there was a recent case where a child was abducted by a stranger and found drowned in a pond only minutes later but some details really bother me. Barefooted stranger? Somali?
No doubt the Australian police will solve this thing without too many more details being revealed to us first, as is their custom