A man suffered a broken hip after being attacked in a row over parking.
The 64-year-old victim asked a woman to move her purple Skoda as it was blocking a driveway.
A man, believed to be in his 50s, then approached and punched him.
The victim was taken to University Hospital Crosshouse in Kilmarnock with a broken hip following the assault.
The incident happened outside a flat within the East Road car park – across from Aldi – in Irvine, North Ayrshire, at around 1.30pm on Monday.
Detective sergeant Peter Sweeney, of Saltcoats CID, said: “We’re appealing to anyone who witnessed this incident to contact us.
“Similarly anyone who was travelling along East Road around 1.30pm on Monday and has dashcam footage, please contact us.”
If you have any information, call 101 or Crimestoppers anonymously on 0800 555 111.