Marcelo Antelo

Near the end of the month, Antelo was captured by police and thrown in prison. His trial started on August 6, 2012, and although only the victims' families were present, some relatives outside had gathered a crowd encouraging a conviction and hurling insults at Antelo, even handing out flyers calling him a murderer. Meanwhile, Marcelo himself denied any responsibility in the killings, accusing the police of "planting" a 9mm pistol in his house in order to have a scapegoat for the unsolved crimes. He additionally denied believing in a pagan saint. However, the jury weren't convinced, as there was plenty of evidence contradicting his claims, including ballistic expertise and witness testimonies. The judge, Federico Salvá, sentenced him to life imprisonment, which didn't garner any emotional reaction from Antelo.

On February 21, 2010, Antelo made his attack, shooting Jorge Díaz in the legs during an attempted robbery. Díaz survived, and Marcelo was convicted of robbery and attempted murder, but was released only a short while later. In his subsequent attacks, he struck at night, when there was low visibility and he couldn't be seen.

A 27-year-old philosophy student who also studied law and once held a job in a court, Ezcurra was a drug addict who lived with his father Horacio in Palermo. Aspiring to turn his life around after a long trip through Mexico, Ezcurra had begun therapy to treat his addiction two months prior to his murder. But on April 11, 2010, at around 2 o'clock in the morning, he came across "The Kindergarten Boys" in an alleyway, a gang of underage youths led by Marcelo Antelo. They wanted to rob Rodrigo of his possessions, and despite giving into their demands, he was shot in the chest by Antelo, dying on the spot. Ezcurra's bike and cellphone were then stolen by the perpetrators, whom, unbeknownst to them, were seen by several witnesses and even recorded by one.

On August 8, 2010, Antelo wanted to enact revenge upon Jorge Héctor Mansilla, a former flatmate who had kicked him out because of his drug addiction. Marcelito rang the doorbell, and when Mansilla answered, he was swiftly killed.

Marcelo Alejandro Antelo (born 1988), also known as The San La Muerte Killer, is an Argentine serial killer, responsible for the murders of at least four people in the Bajo Flores neighborhood in Buenos Aires between February and August 2010. Allegedly committing them in the name of the pagan saint San La Muerte, he was sentenced to life imprisonment for his crimes.