Three men have been killed in a two-vehicle crash.
Hertfordshire Police said it was called to Cory Wright Way, Wheathampstead, at 21:38 BST on Wednesday following a collision between a silver Vauxhall Astra and a grey BMW 840i.
Three men in the Astra, aged in their 30s, 40s and 50s, died at the scene, the force added.
The driver of the BMW, a man in his 30s, had serious injuries and was taken to hospital, where he remained on Thursday.
Police said no formal identification of the men had taken place, but their next of kin had been informed and were being supported by specialist officers.