The hunt is on for a gunman after an 18-year-old was shot and killed outside a Casa Grande house party near Trekell Road and Rodeo Road.

There are new developments in a deadly shooting at a house party in Casa Grande over the weekend. Police have a 16-year-old suspect in custody. The victim, who was just 18, was shot and killed outside his home near Trekell and Rodeo roads on Sept. 20. Casa Grande Police say 18-year-old, Joseph Castro was shot and killed at the house party early Sunday morning. A man who identified himself as Castro’s grandfather said he hopes more arrests will follow. "I mean, at least they already have one person in custody, right? And I think that through him, they will get more information to catch the other people who were involved," he said. Security video shared with FOX 10 captures the 19 gunshots that left Castro dead in the driveway with multiple wounds. Investigators tracked down the unidentified 16-year-old suspect using Flock license plate cameras, arresting him just hours later. He's now at the Pinal County Juvenile Detention Facility. "You know, it was tough to hear, especially knowing that he's a young man, and he had the right to be here, and nobody had the right to take his life," said Gabriel Castaneda, who managed Castro when the 18-year-old worked on jobs for his landscaping company, "Hire a Henchman" Landscaping. "I want people to know that he had character. He had character, and just like any of us, just like any of us, he had dreams. He had hopes," Castaneda said. While police have not yet said what led up to Sunday’s shooting, Gabriel says Castro’s death is a heavy blow to all who knew him. "We're not going to get to see what kind of man he grows into, and as far as I was seeing, he was growing into a really nice man," Castaneda added. The 16-year-old suspect is facing multiple charges, including first-degree murder. We don't know the name of the suspect, or what might've led up to the shooting. Police believe more people could have been involved and are asking anyone with any information to come forward. Anyone wishing to remain anonymous may contact Silent Witness at 520-836-2100. To view the GoFundMe for Castro, click here.

The hunt is on for a gunman after an 18-year-old was shot and killed outside a Casa Grande house party near Trekell Road and Rodeo Road.

A teenager has been arrested in connection with a house party shooting over the weekend that left a man dead. Casa Grande police say the shooting happened at around 1:20 a.m. on Sept 20 near Trekell and Rodeo roads. When officers got to the scene, they found 18-year-old Joseph Castro dead in the driveway from multiple gunshot wounds. Investigators say they were able to identify a suspect's vehicle using Flock Automated License Plate Readers. "Detectives were able to locate the vehicle in Casa Grande just hours after the shooting," police said. "Patrol Officers conducted a high-risk traffic stop, and the 16-year-old driver was taken into custody without incident." The teenage suspect was arrested and booked into a juvenile detention facility. It's unknown what led up to the shooting. Detectives say they "have obtained significant evidence indicating additional suspects were involved in the shooting." Police ask anyone with information to call them at 520-840-3175 or Silent Witness at 520-836-2100. Map**of where the shooting happened:**

An 18-year-old was found dead outside a house party in Casa Grande. Now, police are searching for the shooter. Casa Grande Police said multiple shots were fired outside a house party near Trekell and Rodeo roads at around 1:20 a.m. on Sept. 20. Joseph Castro, 18, was found dead in the driveway of the home with multiple gunshot wounds. Castros' father said he had left the house for five minutes, came back, and saw his son lying on the floor. "He was very responsible. He was grown up for an 18-year-old. He just turned 18 two weeks ago. Joey, I love you. I miss you. It's not going to be the same here without you," he said. No suspects have been identified, and the events leading up to the shooting were not disclosed. Anyone with information on the shooting or the identity of the suspect is asked to contact Detective Brandon Garcia at 520-840-3175 or email Brandon_Garcia@casagrandeaz.gov. This remains an active investigation. Map of the nearby area of the house party shooting.