He said he plans to subpoena the prime minister and his wife as witnesses.
Conroy warned NBN Co boss Bill Morrow to expect a subpoena if the company's chief technology officer, Dennis Steiger, failed to show up at the next hearing of the NBN select committee.
Moreover, in its own legal challenge to the subpoena, the firm accused prosecutors of trying to force its employees to violate federal law.
Labor frontbencher and former Labor communications minister, Senator Stephen Conroy, has threatened one of NBN Co's senior executives with a subpoena if he refuses to front another parliamentary hearing.
In January, the New York County district attorney's office issued a subpoena to Twitter, calling on the firm to hand over "any and all user information, including email address, as well as any and all tweets posted for the period 9/15/2011 – 12/31/2011".
Lawyers for Twitter also argued that under the Uniform Act, prosecutors would need to obtain a subpoena in California before it could demand documents from a company based in that state.
All other tweets prior to this date could legitimately be demanded by means of subpoena, it was ruled.
It traded the end of NSA bulk surveillance for the retention through 2019 of Section 215, which permits the collection of "business records" outside normal warrant and subpoena channels – as well as a massive amount of US communications metadata, according to a justice department report.
Government frontbencher Mitch Fifield reminded Conroy that no single senator had the power to compel a person to front an inquiry and a subpoena would need the support of the upper house.
This would replace the self-regulating Public Oversight Board and has many more powers, including subpoena authority and disciplinary powers.
ReprintsSo on September 8th the SEC asked a court to enforce the subpoena.
