UK government ministers are being told to co-operate in an investigation into leaks about discussions about Chinese telecoms firm Huawei.
Details of decisions about Huawei's potential role in the UK's 5G network were leaked in the UK media after a National Security Council meeting.
The UK's top civil servant is now investigating.
After ministers and advisers met at the National Security Council it was reported Huawei would be allowed limited access to the 5G project - despite security concerns.
Former senior civil servant Lord Kerslake says it's a serious breach.
IN: "We've got...
OUT: ...leak happening."
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