Two people from the Vale are being questioned after a cyclist was hit by a vehicle in Cardiff’s Grangetown.
The collision happened on Dunleavy Drive at around 8.40am on Saturday morning.
Detectives say a 72 year-old man from Roath was taken to hospital with potentially life threatening injuries.
A 19 year-old man from Sully and his passenger, a 24 year-old woman from Dinas Powys, were arrested on suspicion of driving under the influence of alcohol.
Anyone who witnessed the collision or who may have dashcam footage should contact the Roads Policing Unit at South Wales Police on 101, quoting reference no. 2500155483.

Plan to change the face of a Welsh village
1,000 children vaccinated against Hepatitis A in Barry but there’s still time to protect your child
Plans have been approved to convert offices into a bedsit in Barry, despite police concerns
Police Appeal for Witnesses after Penarth Road collision
Penarth teacher to appear in new fly-on-the-wall S4C series
Barry Athletic bowler is county champion
Penarth Athletic launches public consultation on major rebuild nine months after devastating clubhouse fire
Barry Learner Secures Place to Study Medicine After Transformative Return to Education
Detectives release e-fit in Barry sexual assault investigation
39 year old from Llantwit Major charged in Thailand investigation
Joint RNLI Operation Rescues Grounded Vessel Off Lavernock Point
Warning Issued After Reports of Rogue Gutter Cleaners in Barry
Safety Checks to Begin at Hundreds of Vale Homes as National Grid Launches Inspection Programme
Senedd Members support calls for better paternity leave in UK-wide parent strike
Network Rail announces community engagement sessions on future of Brookside level crossing
Coastal Litter Pick Series Announced for Glamorgan Heritage Coast
Glamorgan Archives invites visitors behind the scenes to discover centuries of history
£200,000 Secured for Next Phase of Barry RFC Sports & Community Hub Redevelopment
Walk‑In Hepatitis A Vaccination Clinics Open in Barry as Health Board Expands Outbreak Response
Beloved Stanwell School teacher retires after inspiring generations for 35 Years