Portuguese police on Thursday arrested the mother of two young French boys found abandoned by a main road in the south of the country, alone and crying. The boys, aged four and five, were rescued on Tuesday by a passing motorist near the resort town of Comporta, where they had been left with backpacks containing food and water but no identity documents, according to Portuguese media. A manhunt was launched for the boys’ mother, 41, and on Thursday Portuguese police said they had arrested her in.