An Arizona mother who shot her sons in a murder-suicide sent a photograph of one child’s bloodied head to her husband amid the horrific rampage, police have said.

Andrea Clarice Davis, 38, is believed to have killed her children, aged 10 and 18 months, at a home in Phoenix, after first attacking a woman her husband was with.

Police said she started her rampage just after midnight on Monday at Tailgaters Sports Bar & Grill in Glendale, where her husband was drinking with a 36-year-old woman.

Glendale Police said the husband, Nolan Davis, 39, called 911 and told officers his wife had fired shots at the back of the woman’s head as she tried to leave the parking lot outside the bar.

The victim, who has not been identified, was treated in hospital for non-life-threatening injuries, and she is expected to survive.

Police did not confirm the relationship between Nolan Davis and the victim.

Nolan said his wife texted him as she fled in a gray SUV to a home in Phoenix, around two miles from the bar, saying she was going to hurt their children.

Minutes later, he received a haunting photograph from his wife, showing one of the children bleeding from the head.

An Arizona mother who shot her sons in a murder-suicide sent a photograph of one child's bloodied head to her husband amid the horrific rampage, police have said
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An Arizona mother who shot her sons in a murder-suicide sent a photograph of one child’s bloodied head to her husband amid the horrific rampage, police have said

Andrea Clarice Davis, 38, is believed to have killed her children, Austin, 10, and Andolan, 18 months, at a home in Phoenix, after first attacking a woman her husband was with
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Andrea Clarice Davis, 38, is believed to have killed her children, Austin, 10, and Andolan, 18 months, at a home in Phoenix, after first attacking a woman her husband was with

‘The male victim subsequently received a text message containing a photo of one of the children bleeding,’ Glendale Police told the Daily Mail in a statement.

Glendale and Phoenix police officers said they rushed to the home, arriving at about 2.30am, but it was too late to save the boys.

Officers were confronted with a grisly scene, as Andrea and both her sons lay dead.

‘It is very difficult to deal with today,’ Phoenix Police Sergeant Lorraine Fernandez told AZ Central. ‘No one wants to see harm done to children.’

Felicia Queen, a cousin of the children’s father, told the outlet that Davis and her husband had been in the process of separating. The family asked for privacy.

According to ABC 15, no record of prior domestic violence reports had been made in the area.

Davis's husband told officers that his wife had arrived at the bar and opened fire before she threatened to harm their children over text messages to her husband
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Davis’s husband told officers that his wife had arrived at the bar and opened fire before she threatened to harm their children over text messages to her husband

Officers responded to the couple's home in Phoenix at around 2.30am where they found the suspected shooter and the couple's two children deceased from gunshot wounds
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Officers responded to the couple’s home in Phoenix at around 2.30am where they found the suspected shooter and the couple’s two children deceased from gunshot wounds

Both scenes remain active, with the Glendale Police Department investigating the bar scene and the homicide investigation under the control of the Phoenix Police Department.

The Daily Mail has reached out to the Phoenix Police Department for comment.