Thanks Badboy - those were the ones I was thinking of, I remember seeing film footage of it, terrible. Even when they got within speaking distance of one guy hiding in a hole and tried coaxing him out, he preferred to blow himself up in the hole with a grenade.
So even if the allies had made actual contact with Japanese civilians, they might have still been so frightened as to kill themselves like that guy did.
As an aside, if the whole ethic of 'shameful surrender' was what caused the ill-treatment of allied POW's by the Japanese military - if it was a kind of 'punishment' coupled with an attempted incentive to get them to commit suicide, then you can sort of understand why they did it and why they saw nothing wrong with it - they were just trying to encourage 'cowards' to die an 'honourable' death.