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EL PASO COUNTY, Colo. -- Two Coronado High School students found dead in March in El Paso County were killed execution-style over a missing purse, according to an arrest affidavit.

The arrest affidavits of the 10 suspects in the case were released Thursday.

They reveal that Natalie Partida, 16, ran away from home the day she was killed. At some point, she met up with Derek Greer, 15. Their bodies were found March 12.

The information came to light in the arrest affidavit for suspect Gustavo Antonio Marquez, 19.

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The day before the killings, witnesses told El Paso County sheriff's detectives a man named Joey Rodriguez was plotting revenge on Partida.

According to arrest documents, the witness said, “her friend Joey Rodriguez told her that he was going to kill [Natalie] someday” because Partida allegedly stole a purse from Rodriguez’s home during a party.

The El Paso County Sheriff's Office said a friend of Rodriguez, Alexandra Romero, came up with an idea to kidnap Partida. She told detectives she believed Partida would get beat up to scare her.

According to documents, Romero enlisted the help of a mutual friend, Marquez, to lure Partida.

Marquez reportedly picked up Partida and Greer on the evening of March 11. Two other men, Diego Chacon and Marcos Garcia-Bravo, were also in the car.

The documents suggest the three men drove the teens to Rodriguez’s home where he allegedly threatened one of them with a crowbar and took the teen’s cellphone.

Marquez, Chacon and Garcia-Bravo drove Partida and Greer around the area, eventually stopping at Old Pueblo Road in Fountain.

According to Marquez’s arrest affidavit, “as soon as Mr. Chacon got in the car he put his arm around [Natalie] and pointed a gun at her stomach.”

Partida reportedly begged for her life numerous times on the drive and was given the chance to “say goodbye to her family” using a cellphone, but “when [Natalie] did not log into her Facebook account Mr. Garcia-Bravo took the phone back stating you lost your chance.”

Police used cellphone records from Marquez’s phone to place Marquez, Chacon and Garcia-Bravo near the crime scene just before 11 p.m.

Marquez confessed to police the three forced the teens out of the car and into “execution position."

He told detectives that he believed Partida’s hands were on her head when Chacon shot her twice, causing her to fall to the ground.

Marquez said Chacon then handed the gun to Garcia-Bravo, who allegedly fired it at Greer, who immediately fell forward.

“Mr. Garcia-Bravo fired multiple shots to include shooting [Greer] after he fell to the ground,” the arrest document states.

Partida and Greer were left to die on the side of the road, while Marquez, Chacon and Garcia-Bravo allegedly drove off to attend a party later that evening.

It is unclear from the arrest documents why Greer was also killed. He seemingly just happened to be with Partida in the wrong place at the wrong time.

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