He said they call into question the Prime Minister's decision to appoint Mr Crosby to run the Conservative election campaign in 2015.
These are very serious allegations, which call into question the Prime Minister's decision to appoint Lynton Crosby.
These allegations must be investigated and if they are true, David Cameron must condemn them.
Appointing the arch right-winger who ran the Tories' 2005 election campaign shows once again that David Cameron can't be the One Nation Prime Minister Britain needs.
More top news
Firefighters are at the scene this morning
Tony Blair has called for Remain voters to persuade Brexit supporters that the UK is better off in the EU.
The 29-year-old victim, Manmeet Alisher, was described as a much-loved member of Brisbane's Punjabi community.