A young man died after his car collided with a lorry in icy conditions early today.
The collision happened on the A470 in Powys near the Storey Arms between Merthyr Tydfil and Brecon, south Wales, at 6.40am.
The main A470 south Wales valleys road was partly blocked as a result of the accident.
A Dyfed Powys Police spokeswoman said: "Police can confirm that one person has died following an RTC (road traffic collision) on the A470 near Storey Arms involving two vehicles at around 6.40 this morning.
"The deceased is a young man and officers are in the process of contacting next of kin."
The news came as wintry weather is set to again cause widespread disruption across transport routes in England and Wales.
More than two inches (6cm) of snow blanketed some regions and the mercury plunged to -4C last night, and more cold conditions are expected with temperatures plummeting to as low as -9C.
Last night snow began falling in the North and the Midlands before gradually hitting the Home Counties, East Anglia, London, the South East, the South West and Wales.
Victoria Kettley, forecaster at MeteoGroup, the weather division of the Press Association, said: "The snow began around 6pm before intensifying. The heaviest falls were seen over a band covering South Yorkshire and Leicestershire with accumulations of between 5-6cm.
"As the evening progressed the heaviest snow spread southwards before fizzling out towards Wales and the South West."
She added: "The overnight weather means there will be treacherous conditions on the roads this morning as the snow melts and poses the threat of widespread ice on untreated roads."
A "yellow" severe weather warning instructing people to "be aware" of snow and ice in nearly all parts of England as well as south Wales has been issued by the the Met Office. A level three cold weather alert is also in place.
Kettley said snow could return to the South West and Wales today with the rest of the UK remaining dry but bitterly cold.
"There could be temperatures of between -7C to -9C tonight and over the weekend it will be bitterly cold," she said.
"Air temperatures might not get above freezing across the Midlands and East Anglia throughout Saturday, increasing the danger of ice."
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