Japan is prone to large earthquakes, but none were reported in the area in the morning.

BBC: Japan Sasago tunnel: Collapse traps cars

The police have contacted local wallaby owners in the area but none had reported a missing animal.

BBC: Wallaby

Detectives said a number of women had come forward through a Facebook page set up to raise awareness of Mrs Meagher's disappearance to tell of attempted abduction in the area - but none was reported to police.

BBC: Jill Meagher