Police officers in Essex have drained a pond near the scene where Saudi Arabian student Nahid Almanea was murdered in Colchester last Tuesday and are carrying out an "intensive fingertip search."
The 31-year-old was stabbed 16 times and left to die as she walked along a quiet footpath in the town.
The search came as Detective chief superintendent Steve Worron issued a new appeal for information about a man seen wearing a "distinctive" beige-coloured jacket while walking along the Salary Brook Trail, where Ms Almanea was killed, around the time of the attack.
More top news
The Prince of Wales' household is so riddled with infighting it is nicknamed Wolf Hall, according to a new unofficial autobiography.
There will be blustery showers across northern parts overnight with showery rain and sleet across the south.
Rap mogul Marion 'Suge' Knight has been arrested on murder charges after a fatal hit-and-run incident in Los Angeles.