The pressure on David Cameron's communications chief Andy Coulson has intensified after MPs approved an investigation by a parliamentary sleaze watchdog.
Claims that MPs' mobiles were hacked by News of the World (NotW) reporters will be examined by the powerful Standards and Privileges Committee.
All parties backed the fresh probe - sparked by Labour frontbencher Chris Bryant who said he believed many MPs from all sides of the Commons had been targeted.
Ex-royal editor Clive Goodman and private investigator Glenn Mulcaire were jailed for intercepting voicemail messages left for public figures in 2007.
But the row was reignited last week when a former reporter claimed that then NotW editor Mr Coulson was aware such eavesdropping was happening - an allegation he strongly denies.
Mr Bryant told the Commons he was one of the MPs who contacted the Metropolitan Police and was told he was on a list of those allegedly targeted by Mulcaire. But he said he suspected that was the "tip of the iceberg" and hacking extended not just to Labour MPs but also to Liberal Democrats and Tories.
He said hacking into MPs' phones was "a contempt of Parliament, a severe breach of parliamentary privilege" which could compromise their right to speak freely, which "stems in essence from the 1689 Bill of Rights".
"I would urge the committee to use all of the powers at its disposal. That includes the power to summon any person it wishes and to require them to attend," he said.
The MPs should investigate whether other newspapers were involved and whether witnesses at the Culture, Media and Sport Committee's inquiry into the matter "lied to the House", he said.
Tory MP John Whittingdale, who chaired that inquiry, backed the fresh inquiry as some of the new claims "appear to contradict some of the evidence that we received".
The pressure on David Cameron's communications chief Andy Coulson has intensified after MPs approved an investigation by a parliamentary sleaze watchdog.
Claims that MPs' mobiles were hacked by News of the World (NotW) reporters will be examined by the powerful Standards and Privileges Committee.
All parties backed the fresh probe - sparked by Labour frontbencher Chris Bryant who said he believed many MPs from all sides of the Commons had been targeted.
Ex-royal editor Clive Goodman and private investigator Glenn Mulcaire were jailed for intercepting voicemail messages left for public figures in 2007.
But the row was reignited last week when a former reporter claimed that then NotW editor Mr Coulson was aware such eavesdropping was happening - an allegation he strongly denies.
Mr Bryant told the Commons he was one of the MPs who contacted the Metropolitan Police and was told he was on a list of those allegedly targeted by Mulcaire. But he said he suspected that was the "tip of the iceberg" and hacking extended not just to Labour MPs but also to Liberal Democrats and Tories.
He said hacking into MPs' phones was "a contempt of Parliament, a severe breach of parliamentary privilege" which could compromise their right to speak freely, which "stems in essence from the 1689 Bill of Rights".
"I would urge the committee to use all of the powers at its disposal. That includes the power to summon any person it wishes and to require them to attend," he said.
The MPs should investigate whether other newspapers were involved and whether witnesses at the Culture, Media and Sport Committee's inquiry into the matter "lied to the House", he said.
Tory MP John Whittingdale, who chaired that inquiry, backed the fresh inquiry as some of the new claims "appear to contradict some of the evidence that we received".