Two of the four Americans kidnapped at gunpoint in Mexico last week are dead and two are alive and now safe in the US, Mexican officials said.
Four US citizens were kidnapped by armed men on 3 March while driving into the city of Matamoros in the north-eastern state of Tamaulipas, Mexico, across the border from Texas.
They had travelled there for cosmetic surgery, relatives told US media.
One man, named only as José “N”, 24, from Tamaulipas, has been arrested.
Pentagon spokesman John Kirby said: “We offer our deepest condolences to the friends and families of those who were killed in these attacks.”
The two surviving victims were delivered to the US on Tuesday in co-operation with the US consulate in Matamoros, Tamaulipas Attorney General Irving Barrios Mojica said in a tweet.
A Mexican official told Reuters that two men had been found dead, while a man and a woman were safe and in the hands of authorities.
The bodies of those killed have been recovered and are being repatriated, US officials said.
“We are very sorry that this happened in our country and we send our condolences to the families of the victims, friends, and the United States government, and we will continue doing our work to guarantee peace and tranquillity,” Mexican President Andrés Manuel López Obrador said.
The Americans were named as Latavia “Tay” McGee, Shaeed Woodard, Eric James Williams and Zindell Brown, CBS, the BBC’s US partner, reported.
The four were driving through Matamoros – a city of 500,000 located directly across the border from the Texas town of Brownsville – in a white minivan with North Carolina licence plates when unidentified gunmen opened fire, the FBI said this week.
Video shows them being loaded into a pickup truck by heavily armed men. One is manhandled onto the vehicle while others appear to be unconscious and are dragged to the truck.
A Mexican woman, believed to be a 33-year-old bystander, was killed in last Friday’s incident.
At a news conference later on Tuesday, Mexican officials confirmed the 24-year-old man had been arrested and that the four Americans were discovered at a wooden house outside Matamoros. (BBC)