It is not the first time Mr. Ramos has confronted the problem of a series of people who vanished after they were apparently detained by the authorities. In 2011, 20 people disappeared in the same fashion, he said.
The Mexican government estimates that 32,000 people have vanished in the country since 2006, and many of the disappearances are assumed to be related to violence by drug gangs. As in Ms. Molina’s case, the government does not usually provide answers for the families of the missing people.
After Mr. Trejo was taken, Ms. Molina said, she went to speak to navy officials. “They told me they had not arrested my husband,” she said. “They told me he was never presented to them.” So she reported him as missing.
After a few weeks, she and other family members of people who vanished in Nuevo Laredo met with a navy captain who focuses on human rights.
“He listened to us, he heard us and told us it was a done deal, that he would look into the disappearances,” Ms. Molina said, but the captain has not spoken to them since.
“They have to give us answers, they have to tell us where they have them, because they took them,” she said, her voice breaking slightly. “We know he is still alive.”