Parents of gunman charged with manslaughter

Prosecutors have charged the parents of a suspect in a deadly Michigan school shooting with involuntary manslaughter. Authorities have issued a fugitive warrant for James and Jennifer Crumbley, who are accused of ignoring warning signs before the gun rampage. Ethan Crumbley, 15, is accused of using his father's gun to shoot classmates in Oxford, about 35 miles (60 km) north of Detroit, this week.

He has pleaded not guilty on multiple charges including terrorism. James and Jennifer Crumbley are facing four counts each. Authorities in Oakland County have told US media they are currently searching for the pair after the Crumbleys' lawyers were unable to reach them by phone.

"If they think they're going to get away, they're not," Oakland County Sheriff Michael Bouchard told CNN.

He said that a number of his detectives, the FBI and US Marshals Service were looking for the couple. But in a joint statement via text message to the BBC lawyers Shannon Smith and Mariell Lehman said the Crumbleys "are not fleeing from law enforcement" and had left town on the night of the shooting "for their own safety".

They added the pair would return for their arraignment, which was expected to take place later on Friday. Four people were killed and seven injured in the shooting on Tuesday. The victims were Tate Myre, 16, Madisyn Baldwin, 17, Hana St Juliana, 14, and Justin Shilling, 17.

Why have the parents been charged?

On Friday, Oakland County lead prosecutor Karen McDonald acknowledged that charging parents in a child's alleged crime was highly unusual. According to her office's investigation, the boy was with his father last Friday when Mr Crumbley bought the firearm believed to have been used in the shooting. A post on the boy's social media later that day showed off his dad's new weapon as "my new beauty", adding a heart emoji.

Just one day before the shooting, a teacher said she saw the boy searching online for ammunition, which prompted a meeting with school officials, Ms McDonald said. After being informed of the incident, Mrs Crumbley texted her son: "LOL I'm not mad at you. You have to learn not to get caught."

And on Tuesday morning - hours before the rampage - Mr and Mrs Crumbley were called into the school for an urgent meeting after teachers found a note by their son, including several drawings of guns and bloodied people alongside captions like "the thoughts won't stop. Help me", and "blood everywhere". The boy had also written "My life is useless" and "The world is dead", according to the prosecutor.

School officials told the pair they would have to seek counselling for their son. But the boy's parents did not want him to be removed from school that day, Ms McDonald said, and did not ask him whether he had the gun with him, or search the backpack he brought with him to school.

At 13:22 later that day, Mrs Crumbley texted her son to say: "Ethan, don't do it." Minutes later her husband called police to report his gun was missing, said the prosecutor. But authorities say the boy had already emerged from the school bathroom and opened fire on fellow students. Ms McDonald said the charges were meant to hold the Crumbleys accountable as well as to send a message about responsible gun ownership. "The notion that a parent could read those words and also know that their son had access to a deadly weapon that they gave him is unconscionable, and it's criminal," she said.

The prosecutor had previously noted that, although the gun had been purchased legally, it "seems to have just been freely available" for the child's use. According to her, the suspect took the gun from an unlocked drawer in his parents' bedroom and brought it to school.

Neither federal nor state law requires gun owners to keep their weapons locked away from their children In a video message posted to YouTube on Thursday, the school's superintendent Tim Throne said that - while the boy and his parents had been called to the office - "no discipline was warranted" at the time. He added that the school looked like a "war zone" and would not be ready to operate again for weeks. Ms McDonald alleged on Friday that, when James Crumbley heard about the shooting, he "drove straight to his home to look for his gun" before calling authorities to say he suspected his son was the perpetrator.

"I'm angry as a mother. I'm angry as a prosecutor. I'm angry as a person that lives in this county," she said. "There were a lot of things that could have been so simple to prevent." On Wednesday, prosecutors charged the boy as an adult. He now face charges of terrorism and first-degree murder.Announcing the charges, Ms McDonald said her office had "a mountain of digital evidence" to show the suspect had planned the attack "well before the incident".