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Utah County Jail
Jesse Gourdin

PROVO — Four people have been arrested in connection with the killing of a 24-year-old man.

Gustavo Ramirez was shot and killed Monday night at his home in the 100 North block of 400 West in Provo. Shots were fired both inside and outside the house, according to police.

On Thursday, Provo police announced that Brayden Kenneth Marshall, 18, of Provo; Maria Guadalupe Hernandez, 18, of Sandy; and Jerry Otis Hawley, 34, of Eagle Mountain, had been arrested "for involvement in an armed robbery that resulted in the death of Gustavo Ramirez," according to a statement from police.

Each was booked into the Utah County Jail for investigation of murder, aggravated assault and obstruction of justice.

By 1:30 p.m., police announced that Jesse William Gourdin, of Orem, the suspected gunman in the incident, had been arrested by Farmington police.

"Investigators believe Marshall, Hernandez and Hawley accompanied 21-year-old Jesse Gourdin to Gustavo Ramirez’s house to commit an armed robbery. Detectives believe Hernandez told the men there was money in the house, Marshall supplied the gun to Gourdin, and Hawley drove them all there to commit robbery," according to the police statement.

Provo Police Sgt. Brian Taylor said Hernandez told the others there was a "certain amount of money" in Ramirez's house. She also claimed that Ramirez had a backpack that belonged to her, Taylor said.

How the robbery attempt turned into a shooting and how it all played out was still being investigated Thursday, he said.

Another 18-year-old man, Ricky Jaynes, was arrested for investigation of drug and weapons-related charges during the course of the investigation, according to police.

According to court records, Gourdin was convicted of drug possession in 2015, theft in February 2016, assault by a prisoner in November 2016, and possession of drug paraphernalia just over a week ago.