Colorado gun store owner and dad-of-nine, 55, 'killed his wife and two of their adopted special-needs children, 13 and 9, in apparent murder-suicide'

• Yvette Siegert-Kreb, 50, Felicity Kreb, 13, Barrett Kreb, 9, and Christof Kreb, 55, were found dead on Saturday in their home in Colorado Springs 
• Authorities say Christof killed his wife and two adopted children before taking his own life 
• Bodies were discovered on Pleier Drive on Saturday after a young boy called 911, saying his sibling was not moving 
• Krebs had nine children, among them six adopted special-needs kids of whom five were living with dwarfism 
• Felicity Kreb had learning and social problems because of dwarfism, and Barrett, one of the newest adopted children, had recently undergone surgery
• Christof was a US Army veteran who owned a gun store; Yvette was also a veteran and a retired neonatal ICU nurse  

By SNEJANA FARBEROV FOR DAILYMAIL.COM

A gun store owner and US Army veteran killed his wife and two of his adopted special-needs children last weekend before taking his own life in an affluent community near Colorado Springs, authorities have alleged.

Yvette Siegert-Kreb, 50, Felicity Kreb, 13, Barrett Kreb, 9, and Christof Kreb, 55, were found dead on Saturday in their home in the community of Gleneagle, the El Paso County Sheriff's Office said in a statement Monday. 

Details about how they died will be released by the county coroner, the statement said. No potential motive had been revealed as of Tuesday afternoon, but a friend said the family had struggled during the pandemic lockdown. 

Felicity, known to her loved ones as 'FiFi,' had learning and social problems because of dwarfism, and Barrett, one of the newest adopted children, had recently undergone surgery, Gromko said.

'She wanted her [biological] son to feel like he had people like him in his life, so they specifically adopted children with dwarfism,' Gromko said of Siegert-Kreb. 'I was so in awe of her devotion and dedication.'

Police were called to the Kreb family's sprawling property in the 1300 block of Pleier Drive at around 10am on Saturday after receiving a 911 call from a young boy.  

Dispatchers were told by the boy that one of his siblings was not moving.

When police entered the home, they found both parents and two children dead. 

Saturday's incident and call prompted a massive response by police. 

A 'reverse 911' or Everbridge was sent to families in the community within 2 miles of the scene, telling them to stay in and lock their doors and windows. 

It is unknown at this time where the Krebs' other children were at the time of the murder-suicide. 

Christof Kreb owned Specialty Sports and Supply, a gun store in Colorado Springs. His wife was a retired neonatal intensive care unit nurse, and both spouses were US Army veterans. 

Siegert-Kreb wrote online last year that she made masks during the pandemic and kept her children sheltered at home, noting that most of them were more susceptible to the virus because of their dwarfism, which can impair the immune system.  

Wendy Hammack-Smith, a long-time family friend, told KRDO that Yvette and Christof were loving parents, but they had struggled during the COVID-19 pandemic, although she would not go into specifics. 

'Definitely the COVID isolation wore on this family as it did so many other families,' she said.

Several members of the family, including Siegert-Kreb and her older children, were involved in competitive sport shooting.

The couple's biological daughter, Morgan Kreb, is a sophomore cadet at the US Air Force Academy and a star member of the school's air rifle team who won a bronze medal at last year’s Olympic Air Rifle Trials. She was said to have been away at a shooting competition on Saturday when her parents and two siblings were found dead. 

Morgan's biological brother, Tristan 'Tak' Kreb, left for graduate school earlier this year. Both siblings are now back in Colorado Springs to help care for their surviving adopted brothers.  

'None of us could have imagined this would have occurred or predicted this,' Morgan stated, adding through tears: 'I will miss them dearly and will think about them daily.' 

One of the couple's adopted children is legally blind, and another was born without legs. 

Gromko, the family friend, paid tribute to Siegert-Kreb, describing her as a fierce and dedicated advocate for her special-needs children.   

'She became their voice and did not stop fighting for their needs,' she wrote on Facebook.