A four-year-old girl has been found safe following a three-day hunt sparked when a man was seen apparently putting a child into the boot of a car.
The inquiry started in Wales and spread to England
Two men - a 32-year-old from Ealing in London and a 48-year-old from Bracknell, Berkshire - have been arrested on suspicion of child cruelty.
Shoppers at Sainsbury's in Swansea called police on Wednesday saying they saw a girl being put into a car boot.
She was found in Berkshire on Saturday and has been returned to her family.
The men are being held by Thames Valley police, but South Wales Police said they are due to be brought to Swansea for questioning.
A spokesman for South Wales police said: "[We] would like to thank the media and public for their assistance, and would like to commend the prompt reactions to our appeal which led to this successful result."
The car had been seen in the London area the day before the Swansea report was made, and was driven back into England on Wednesday evening.
Up to 20 officers have been working on the case.
South Wales Police worked with the Metropolitan Police and Avon and Somerset Constabulary, as well as neighbouring Welsh police forces during the search for the girl.