On Christmas afternoon Ross posted a touching video alongside his 11-year-old son, Nigel, singing ‘Santa Claus is Coming to Town.’
Just 90 minutes later police said the shooting rampage began.
Ross’s social media fans have reacted with shock by the disturbing news, as hundreds of his fans commented their horror on the video, which remains on his page.
Police responded to the apartment at around 4pm on Monday afternoon, finding Iris’s body outside an apartment in the complex.
When police began to enter the apartment a standoff with Ross ensued.
Ross, who was commonly known by Milan by his fans, lost a significant amount of weight in his 20s when he switched to a vegan lifestyle.
He then became a chef and started writing and doing inspirational videos about his transformation and new lifestyle.

Milan Ross sent ex-sister-in-law a chilling message Tuesday, “I just killed Iris and the kids.”
“with a gun.” 

Ross was also featured alongside celebrities such as James Cameron and Samuel L Jackson in a feature-length documentary about veganism.
His Facebook profile more than 6,200 followers as of Tuesday night, though it seems that number may have dwindled throughout the day as news of the tragedy spread.
However, Ross was also battling depression, according to Iris’s sister Mary Wogas.
‘I received a text yesterday around 2.52pm,’ Wogas told ABC 15, explaining that the texts came from her former brother-in-law.
‘Two messages, first one saying “I just killed Iris and the kids. The second message was “with a gun.” I knew that man was very unstable. I knew he had a very, very dark side. I didn’t know it was this dark.’
Ross, who was commonly known by Milan by his fans, lost a significant amount of weight in his 20s when he switched to a vegan lifestyle

Tuesday morning police confirmed Ross as the father of the two dead children and that he and Iris were an estranged couple.

Anthony Milan Ross and his son Nigel

After finding Iris’s body and confronting Ross, they negotiated with him for hours in a standoff, hoping that one or both of them were still alive.
He eventually told them that he’d killed the children, according to Sgt. Jonathan Howard, but not until after he’d changed his stories and said they were alive and threatened to kill them if police didn’t leave him.
After several hours the Special Assignments Unit sent a robot into the apartment and it became apparent that the infant, Anora, was dead.
‘Throughout the negotiations, he made comments that he had killed the children. He made some notifications to some family members that he had killed the children,’ Howard said.
At around 7:30pm they also shut off power before going into the apartment while fending off gunfire from the suspect.
A few minutes later in a different room they found Nigel’s body.

Howard said Ross lived in a different town and was in Phoenix visiting the children for Christmas. It’s still not clear the motive for the killings.
Ross and Iris were involved in divorce proceedings after Iris filed the papers in June, according to court records.