The Health and Safety Executive is now leading the investigation after a Royal Estate worker at Sandringham had to be rescued from a lake .
The gardener who is in his 30's was on a ride-on lawn mower when he fell into the water. He remains in a critical condition at Addenbrookes Hospital. Norfolk Police say they are no longer leading the investigation into the incident.
More top news
Clear skies overnight but remaining frost-free. Another sunny day tomorrow and increasingly warm as we head towards the weekend.
Voting is taking place across the Anglia region in the biggest test of political opinion since the General Election in May 2015.
Leading micro-surgeons from around the world are at a two day conference in Norwich discussing pioneering techniques