Police are appealing for witnesses to a collision in Ebbw Vale.
It happened in Park Road, Ebbw Vale at around 12.10pm on Thursday 8 December.
The collision involved a silver Vauxhall and a motorbike.
The driver of the car, a 28-year-old woman has been arrested on suspicion of causing serious injury by dangerous driving and the rider, a 60-year-old man was taken to hospital with life-threatening injuries.
Anyone with information is asked to contact Gwent Police on 101 or send a direct message on Facebook or Twitter, quoting log reference 2200405367 with any details.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.
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