The chief executive of the Met Office has stood down with immediate effect.
Rob Varley is being replaced on a temporary basis at the national weather service by his deputy, Nick Jobling.
The BBC understands his exit follows an intervention by the top civil servant at the Department for Business, Energy and Industrial Strategy.
This is believed to relate to concerns about "governance and management controls" at the public body, which employs more than 1,000 staff.
In a short statement, the Met Office said its operations and services were wholly unaffected by the decision.
Mr Varley, who began his career as a weather forecaster, had been chief executive since 2014, having first joined the organisation in 2007.