Jose Alfredo Lopez Guillen was kidnapped from his home on 19 September in Janamuato, in western Mexico.
Bodies of priests abducted from impoverished neighbourhood found dumped by roadside.
Mexico had earlier agreed to transfer Guzman to the US after it had guaranteed he would not face death penalty.
Tomas Zeron had come under fire in April following criticism from the Inter-American Commission on Human Rights.
It's 'as if it was written by the Trump campaign,' says a critic on the Board of Education.
A day earlier, a Catholic organisation is believed to have held massive protests against the move.
Trump's joint conference in Mexico City, viewed as a humiliation of the government, sparked public outcry.
If the three had reached their destination, the animals could have had a market value of €80,000.
Stone found at Lambityeco, an important pre-Hispanic settlement, may have been part of a stairway to a temple.
Mexican citizens living illegally in US border states most at risk
In a fiery Arizona speech, the GOP nominee promised to ramp up border patrol.
The National Human Rights Commission found evidence that police tortured suspects during raid.
The 17-year-old is thought to have had a fatal seizure after a blood clot travelled to his brain.
The high-value target was taken captive along with five others by seven armed men.
The woman was fined $300 after the pork was found.
Salazar was among 6 abducted from upscale restaurant, La Leche, in the resort city of Puerto Vallarta, Mexico.
Jesus Alfredo Guzman, 29, is one of six abducted individuals from the La Leche restaurant.
A group of six were abducted from an upscale restaurant on Monday.
All of those involved, including kidnappers and the kidnapped were linked to organised crime.
Mexico play South Korea in the Rio 2016 Olympics on Wednesday, 10 August.
The pollsters were the employees of SIMO Consulting firm.
Hugo Rubén Castellanos Jiménez, 39, was killed after being abducted by masked men in the embattled region.