At least 29 teenage migrants were deliberately drowned by a people smuggler in Yemen, the UN's migration agency says.
They were among 120 people who were deliberately pushed from a boat into the sea by the smuggler who apparently feared arrest.
Some 27 survivors were found on a beach by the International Organization for Migration (IOM) on a routine patrol.
Twenty-two are missing while the rest have moved on, the IOM said.
It added in a statement that the average age of the Somali and Ethiopian passengers on the boat appeared to have been 16. They had been hoping to reach countries in the Gulf via war-torn Yemen.
"The survivors told our colleagues on the beach that the smuggler pushed them to the sea, when he saw some 'authority types' near the coast," explained Laurent de Boeck, the IOM Yemen Chief of Mission.
The smuggler has already returned to Somalia to pick up more migrants to bring them to Yemen on the same route, they told the IOM.
"This is shocking and inhumane," Mr de Boeck said. "The suffering of migrants on this migration route is enormous. Too many young people pay smugglers with the false hope of a better future."
Despite conflict and a dire humanitarian situation, Yemen is still seen by many Africans as a gateway to the rich Gulf states or Europe, and thousands make their way there every year in crowded boats.
Around 55,000 migrants have left the Horn of Africa to come to Yemen so far this year, more than half of them under the age of 18 and a third thought to be female, the IOM estimates.
Many others also try to reach Europe via Libya and the Mediterranean Sea.
Wildfires in southern France have forced the evacuation of 10,000 people overnight, officials say.
Hundreds of firefighters have been deployed to battle the fires near Bormes-les-Mimoses, in the country's Provence-Alpes-Côte d'Azur region.
France earlier asked its EU neighbours for more help fighting the fires.
Some 4,000 hectares (15.4 sq miles) of land have burned along the Mediterranean coast, in the mountainous interior and on the island of Corsica.
"The evacuations, at least 10,000, followed the progression of the fire," a fire official was quoted as saying by the AFP news agency.
"It's an area that doubles or triples its population in summer," the official added.
One of the worst fires is raging in an area near the popular resort of Saint-Tropez.
In Corsica, hundreds of homes have been evacuated.
Overall, more than 4,000 firefighters and troops backed by water bombers have been trying to extinguish the flames since Monday.
At least 12 firefighters have been injured and 15 police officers affected by smoke inhalation, officials say.
At least 34 migrants, some of them young children, have drowned after falling into the sea off the Libyan coast, Italy's coastguard says.
More than 200 migrants are feared dead in a boat sinking off the coast of Libya, a Spanish aid organisation says.