Investors to be burned (figurative speech)

Good morning everyone;

The following paragraph is from an economic article of The Guardian.

I really don't understand the meaning of the following sentence in bold type even though I assume it's in a figurative sense as I don't think those people are going to be burned alive.

"In Ireland, despite a bail-out, the crisis is not yet over. The new goverment says that the bill to bail out the sickly banks is still growing. It may need a further rescue. Otherwise the threat is there. Investors, including French and German institutions, will have to be burned. There will be further bank stress test next thursday. The Irish governement is hemmed in. ....."

Could somebody explain the meaning of that sentence to me?

Thank you very much.