Juan Angulo, director of the respected local newspaper El Sur, said retired teacher Claudio Castillo, who died in hospital early on Wednesday, was singled out by police as he sat in a truck from where he had been chanting slogans through a microphone.
“The police pulled him out and hit him, before letting him go. Then he was beaten up again by other officers,” Angulo told Radio Fórmula.
The newspaper director added that one of El Sur’s photographers was also beaten by police and his camera was smashed. “The police acted with a lot of violence, but there are not many images of what happened,” Angulo said.
Photographs of the incident were widely shared on social media – including an image of a man covered in blood being marched away by police and another of dozens of detainees lying facedown in the road.
The authorities reported that 106 people were arrested during the operation, of whom 99 were released on Wednesday morning.