Police are attempting to track down the driver of a lorry last seen heading for the Borders who collided with a cyclist in Midlothian.
The injured man, who is in his 40s, remains in a serious condition in the Edinburgh Royal Infirmary after the incident which took place between Howgate and Leadburn on the A6094 on Monday morning.
The cyclist was badly injured in the collision at around 8.40am, while the tipper lorry driver continued on towards Leadburn, where it is believed he travelled south along the A701 to Blyth Bridge or A703 on to Peebles.
The vehicle is described as having a grey or silver trailer, and a black or blue tarpaulin cover.
Police are appealing for the lorry driver, or anyone who has any information on the crash to contact them.
A Lothian and Borders Police spokesman said: “It is very possible that the driver has carried on without realising what has happened, and it’s important that they contact police as a matter of urgency.
“Similarly, anyone who witnessed the collision, or who was on the A6094 that morning and noticed either the cyclist or the lorry heading towards Leadburn, should also get in touch.”
Anyone with any information should contact Lothian and Borders Police on 0131 311 3131, or they can phone Crimestoppers in confidence and complete anonymity on 0800 555 111.