A 35 year-old woman is in hospital with "serious injuries" after a collision on the M4 last night, involving a car towing a horse box.
The incident happened at around 9pm on the westbound carriageway between junctions 36 and 37.
It involved a red Nissan Terrano towing a horse box and a grey Vauxhall Insignia. Occupants of both cars were sent to Morriston, Princess of Wales and University of Wales Hospitals.
The horse box became detached, forcing police to block the motorway while the horses were rounded up.
South Wales Police has confirmed the horses were "uninjured."
M4 Westbound blocked with queueing traffic due to several horses on road between J36 A4061 / A4063 (Bridgend / Sarn Service Area) and J37 A4229 (Pyle / Porthcawl).
Police have blocked the road, whilst the horses are rounded up.
A mum-to-be who was killed in a car crash on the Heads of the Valleys Road yesterday, has been named locally as 20-year-old Sophie Williams from Tredegar.
She was due to have her baby in just two weeks time.
Miss Williams died along with her unborn baby girl as she and her fiance Ben Morgan drove home from a Valentine's meal.
The couple were planning to get married after the baby was born.
They'd been told they were expecting a little girl, and had chosen the name Kayleigh.
The crash happened at 11pm on Friday night during a severe storm at an accident blackspot where roadworks were going on, ironically to turn the road into a dual carriageway, after a high number of fatalities.
Firemen and paramedics freed Sophie from the wreckage and she was taken to Neville Hall Hospital in Abergavenny, but police said doctors were unable to save her and her unborn baby.
Ben and Sophie were in their silver Peugeot 307 when it was in a collision with a blue Peugeot 207 coming the other way.The driver of the other car, a man from Basingstoke, Hampshire, was uninjured but treated for shock.Gwent Police are appealing for anyone who saw the accident to come forward.
Ben is due to be interviewed by police about the tragedy.
The Ministry of Defence told ITV Wales that it's "not impossible" that a military aircraft was flying low over the Pembrokeshire coast last night.
It follows concerns that an aircraft had gone into the sea at Trefin near Fishguard - a search and rescue operation was was later stood down.
Witnesses had reported a loud blast in the area shortly after 7pm, but an MOD spokesman said it was "highly unlikely" this was a sonic boom.
"Breaking the sound barrier over land is prohibited by regulation," said the spokesman.
"The only time a pilot would do it is in an emergency situation."
Milford Haven Coastguard have told ITV News that they believe two military aircraft flying in the area have returned safely to base, after initial reports of a plane crash.
People in Trefin reported two planes flying low overhead yesterday evening and a loud blast moments later.
The air and search operation launched after a suspected plane crash near Fishguard has been "stood down."
Milford Haven coastguard told ITV News they "don't believe there's anything in the area."
The Ministry of Defence has confirmed that no military aircraft has been involved in a crash.
ITV News understands the jet that is believed to have crashed off the Welsh coast is likely to be UK-based.
Dyfed Powys Police have said they are aware of reports of a possible plane crash off the coast of Pembrokeshire and are investigating the claims.