Bukele's crackdown on gangs has led to a drastic drop in homicides and is praised by many Salvadorans, but rights groups slam abuses in prisons, saying inmates are forced to confess and held without contact from families and lawyers.
The Salvadoran NGO Socorro Juridico Humanitario (SJH) estimates that almost a third of those detained are innocent -- based on a study of 3,500 cases.
"I am not defending, or against, the government. What I want is for them to hand over my brother, who is innocent," Yessica said at her home in San Jose Las Flores, north of the capital San Salvador.
Five years ago, her brother Carlos Alfonso, 44, was beaten to death by gang members in his neighborhood, and now she is afraid that Leonel, who suffers from epilepsy, will die in jail.