The Prime Minister has stepped in after an exchange between ministers over the handling of alleged Islamist extremism in Birmingham schools.
A Downing Street source said David Cameron was "keen to establish the facts" after Theresa May wrote to Michael Gove questioning why his department had not acted on warnings of a supposed plot by Islamist extremists.
May's letter inquired about evidence that the Department for Education knew of the 'Trojan Horse' allegations in 2010 and asked: "If so, why did nobody act?"
As the letter emerged the pair took the unusual step of issuing a joint statement insisting they were "working together" on the issue.
More top news
Bernard Morgan may be 93 but he cycles every day and shows no sign of stopping or serving his community and country any time soon.
Lavinia Woodward attacked her Cambridge-educated partner at her university accommodation in December last year.
Labour's election pledge is its most symbolically powerful break with the economics of Tony Blair and Gordon Brown - but will it save money?