One of Mexican drug lord Joaquin “El Chapo” Guzman’s trusted hitmen kept a soundproof “murder room” with a drain to speed up messy executions, jurors have been told.
Galvan said: “He took me once to a house where the floor was just white, tiled.
“In that house, no one comes out. No noise comes out.”
He also said he saw a “drainage outlet” at the property which was located in Ciudad Juarez in Mexico.
He was soon living in El Paso in Texas and helping his new “party friend” move guns across the border to help “clean” Ciudad Juarez of rival cartels.
The witness explained to the court in Brooklyn, New York, that this meant “to kill all of the people”.
Guzman, 61, was extradited to the US last year after escaping from a Mexican prison twice, but his lawyers insist he is being framed.
The alleged Sinaloa co-founder is accused of smuggling more than 155 tonnes of cocaine into the US over 25 years.
He faces 11 trafficking, firearms and money laundering charges and is likely to be jailed for life if convicted.