'I have thought about it before but I decided to do something now because after five months, it is clear that the authorities are not making much headway.

I hope my cash reward will generate the breakthrough they need to nab the chap.

I am a businessman and Singapore has been good to me and my family. I have lived in many places but there is no place safer for my family than in this country.'

The other is in his mid-50s with international trading and consultancy business interests:

'When I learnt from my friend of the proposal to give a reward to help catch the man, I thought it was a good idea.

Whatever you say, $1 million is an eye-catcher and I hope some people will respond to it and give information to capture the fellow.

Staying anonymous is important. If that cannot be assured, I don't think I want to do this.'