Two children aged two and three died after the car they were in crashed into a loch, Police Scotland has said.
Police were called to the incident on the A816 north of Kilmelford, near Oban, in Argyll, at about 16:00 BST.
A helicopter and a coastguard team had been searching Loch nan Druimnean, which is on the Oban to Lochgilphead road – 17 miles from Oban.
A 36-year-old woman was taken to Oban Hospital as a precaution and released after treatment, police added.
Relatives of the two children have been made aware of the crash, police said. Work to recover the vehicle from the water is continuing.
Inspector Darren Faulds said: “Two young children have lost their lives and our thoughts and condolences go out to the family of those involved in this tragic incident.”
He said inquiries were continuing to establish the circumstances of the crash.