Use "whistle-blower" in a sentence

1. With Kulkarni were three BJP MPs, Ashok Argal, Faggan Singh Kulaste and Mahavir Bhagora, who had offered to be ‘whistle-blowers’

2. So the outrageous spending of R246million of taxpayers' money is not worth investigating but the whistle-blower will be hunted down and punished by the minister? Is this really the ANC of Oliver Tambo?’ Any self-respecting head of state who had overseen what Zuma's administration went through in one week would throw himself on his assegai

3. “He became a whistle-blower and spilled the beans on Eastpoint Mining, his employer