Baroness Warsi has said that she backed Michael Gove's complaints about the number of Old Etonians in David Cameron's inner circle because she believes the Education Secretary wants a "world class state system".
"What Michael wants to create is a first class, world class state system which means that in future years you will have more pupils from state schools, people like me, around the cabinet table, and in that I fully support Michael Gove," the faith and communities minister said.
But Shadow Cabinet Office minister Jon Ashworth said: "This is open warfare in the Conservative Party.
"Sayeeda Warsi is making it clear that David Cameron is out of touch with a blatant attack on his style of Government.
"Once again we are seeing the Tories fighting like ferrets in a sack rather than taking action to tackle the cost-of-living crisis facing hard-working people," he added.
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The Islamic centre where the Manchester suicide bomber is thought to have prayed says the attack "has no place in Islam or any religion".
German chancellor Angela Merkel and Indian prime minister Narendra Modi among those to praise "great spirit" of Manchester people.
The bomber's identity has been confirmed by Greater Manchester Police.