Two former senior Health Department executives are facing almost 60 corruption and fraud charges.

But the police investigation has been rocked by the suicide of an an accomplice who became a rollover witness in the alleged bribery scandal.

Known as 'The Fixer' in the CCC report, Grant Alexander had never been charged. Credit:7 News

Grant Alexander – described by the Corruption and Crime Commission as “the fixer” in the bribery affair – died in New Zealand this week.

Three executives from North Metropolitan Health Service were allegedly getting kickbacks in return for lucrative government contracts given to building and maintenance firms.