At 8pm, they found the young athlete's body on the

Instead he shot the teen - who considered him a

A high school coach murdered his ex-girlfriend's son, before maiming her and shooting dead her new lover - his life-long friend - then turning the gun on himself.

Jason E. Huston told the grandparents of young athlete James 'JJ' Hurtado, 14, he was taking him to play a round of golf on Thursday morning.

Instead Huston, who had been in a relationship with Hurtado's mother Andria Bye and was like a 'father-figure' to the boy, took him out and ruthlessly shot him, police said.

The 45-year-old then drove round to the home of his friend, Kenneth E. Valdez, 44, and burst into the bedroom where he found Bye, 35, with his old school buddy.

Detectives say he opened fire on the couple, injuring Bye and killing Valdez before turning the gun on himself in the tragic murder suicide.

'It was an absolutely horrific, selfish choice he made,' Chief of Police, Jason Edmiston told DailyMail.com.

Jason E. Huston (left) shot dead his old friend Kenneth E. Valdez (right) on Thursday

Hurtado (pictured with his OWA State Champion wrestling medal) was last seen with assistant wrestling coach Huston who had picked him up yesterday to play disc golf at McNary Park

Police say that Huston called 911 shortly before the shooting but did not release what was discussed.

Dispatchers also received a call from one of the shooter's relatives who called the police after having a worrying conversation with him.

A third came from a neighbor reporting gunshots at the property in Hermiston, Oregon on Thursday at around 11am.

When officers arrived they found the horrific scene.

Huston and Valdez, both wrestling coaches at Hermiston High School, who has been friends since their wrestling days back at school, were found dead.

The 45-year-old went to the home of his friend, Kenneth E. Valdez, 44, and burst into the bedroom where he found his ex Andria Bye, 35, (pictured) with his old school buddy

Both Valdez (left) and Huston (right) have been lifelong friends and grew up competing in wrestling matches together (pictured in late 1980s)

Bye was discovered with gunshot wounds and rushed to a local hospital. She is expected to survive her injuries.

The grisly discovery also triggered a huge search effort for Hurtado.

His grandparents had told police at the hospital, who were interviewing Bye, that her son had been picked up by Huston at 10am - who had promised to take him to play disc golf at McNary Park.

Officers combed the town and just before 8pm, they found his body in an area Huston is known to go shooting at - a 'remote, rugged area outside of Hermiston,' according to a release from Edmiston.

'It is numbing,' Edmiston said of the murder of the 14-year-old, adding that the killings had rocked the community of Hermiston.

The chief of Hermiston Police Department refused to comment on 'any love triangle' but said an investigation into what sparked the shooting is ongoing.

'Our focus, moving forward, is trying to as best as possible understand why this took place. But we may never know the answer to that.'

Hurtado was reported missing on Thursday and authorities began searching for the teen (pictured in his school wrestling uniform) who was 'related to one of the parties involved'

Hurtardo was a big fan of wrestling and his Facebook page is full of pictures of him competing

The 14-year-old, pictured with his biological father Hurtado Leonardo was described as a talented young athlete with an infectious smile

The alert was raised after police found the horrific crime scene at Valdez's home (Hurtado pictured with his mom Bye)

Detectives also searched Huston's home on Morgan Lane, north of Hermiston, and found his car parked out of town.

Huston, 45, was previously arrested for menacing and unlawful possession of a firearm in 2009.

He was sentenced to a year on probation and 20 hours of community service.

Despite the break up, Huston and Hurtado maintained a good relationship with his ex's son who considered him a father figure.

He also appears to have been close with Bye. It is unclear when her relationship with him ended, and when a new one began with his friend Valdez.

Tributes poured in for Valdez and Hurtado on social media.

Police found the bodies of Kenneth E. Valdez, 44, and Jason E. Huston, 45, at Valdez's home in Hermiston (pictured are police at the scene)

Detectives cordoned off the scene as they investigated what appears to have been a murder-suicide

A 35-year-old woman with a gunshot wound was also found in the bedroom of Valdez's home (pictured)

Kenneth E. Valdez and Jason E. Huston were both coaches at Hermiston High School (pictured)

The coach's cousin Chaz Valdez wrote: 'The world lost a great man today. Such a big heart, ya big teddy bear! Love you and I'll miss you cousin RIP Ken Valdez.'

Meanwhile teacher DayLee Lathim described Hurtado as a boy who could light up the room with his infectious smile.

'You were an incredible, talented (athletic and academic), young man,' she said.

'You always did your best. You always would stick up for your friends. You made me laugh. You made me smile. You made me proud to be your teacher.

'I have been blessed to have gotten to know you, your mom, and your sister. Peace be with you, you are so loved and you will never be forgotten.'

Jennifer Turner McDonough added: 'Can't sleep. Too much sadness in my heart tonight.'

Hurtado (pictured) was eventually discovered at 8pm in a 'remote, rugged area outside of Hermiston,' according to a release from Edmiston

Hermiston High School declined to speak to DailyMail.com.

DailyMail.com has reached out to Hermiston Police Department.

Hermiston School District would not comment on the relationship between the two coaches and Hurtardo.

But Maria Duron, communications officer at the district, said it will provide 'support for staff, athletes and students during this difficult time'.