Brandon Livesay
Reporting from New York

The investigation into the school shooting at Madison, Wisconsin, is now focusing on possible motives behind the attack which killed a student and a teacher at Abundant Life Christian School.

The shooter, who police named as 15-year-old Natalie Rupnow, was a student at the school. She is believed to have died of a self-inflicted gunshot wound before police arrived at the scene.

Today we heard from the chief of Madison police, who said investigators were looking into a document shared online to see if it has any links to the suspect. Chief Shon Barnes said investigators were looking at her social media and computer to try and piece together a potential motive.

Barnes also said the initial 911 call was made by a 2nd grade teacher, and not a young pupil. Police had earlier told media that the 911 call was made by a child.

With no further media briefings expected today, we are pausing our live coverage.

You can read more about the unfolding investigation into the Madison school shooting here.

Image source, Getty Images

Workers have been spotted repairing the entrance to the home of the suspected school shooter.

The home appears to have sustained damage to its front door and window.

Police say the attacker's father gave voluntary consent to search the home.

Image source, Getty Images

We've just heard from officials in Madison, who gave several updates on Monday's school shooting.

• The condition of the injured victims have not changed - we know this to be two people in a life threatening condition and two stable, while another two have left hospital
• Police said they cannot yet verify an alleged manifesto that has been shared on social media
• The motive appears to be a combination of factors, Madison Police Chief Shon Barnes said
• He also acknowledged an error about the emergency 911 call that alerted authorities to the shooting, noting it came from a second grade teacher - not a second grade student as previously reported by police
• Multiple hoax threats have been made to schools in the area today

• The county executive, who is also a senator for the state, said that gun laws were "far too lax" and called for stricter regulations
• Madison mayor Satya Rhodes-Conway called on people to avoid spreading misinformation on social media
• She also emphasised police would release information when they can, but said it was none of the media's business who the victims are

After several questions from the press on details about when the identity of the victims will be released and why police officials had left before answering questions, the mayor says "it is absolutely none of y'all's business who was harmed in this incident".

"Please have some human decency and respect for people who lost loved ones," she says.

"Leave them alone, let them grieve, let them recover, let them heal. Don't feed off their pain. We'll share what we can when we can and not before that."

Following this statement, the media conference ends abruptly.

Many schools in the Madison area were forced to lock down today due to so called swatting incidents - where a hoax caller makes a false complaint to police in the hopes of triggering an aggressive response.

Dane County Executive Melissa Agard says it has been a difficult day for her own son, whose school was one of the ones put into lockdown.

She says it is a "very confusing path for them and my kids seem to know more than I do right now".

Agard adds parents should be mindful of their children using social media and what they are consuming, and to be careful that they are not engaging in misinformation about the shooting.

The first question is for Dane County executive Melissa Agard, who is asked about Wisconsin's laws around children's access to guns.

Agard responds by saying laws in the state are "far too lax", which she says lawmakers are responsible for.

For context: Agard is also a state senator for Wisconsin.

She goes on to say that the federal government needs to be involved because states have borders that are people can cross.

Agard adds that the conversation around US gun laws needs to happen from coast to coast.

Image source, US Pool

Part of recovering is "setting aside complacency and demanding change," Agard tells the briefing.

She says gun violence is the number one killer of children in America.

"That's a legacy we cannot accept," she says.

Mass shootings feel like something that's "ominous and hovering" and that people are "always wondering when next one will occur. Guess what? It happened here," Agard adds.

She and Madison Mayor Satya Rhodes-Conway are now taking some questions from the media.

Dane County Executive Melissa Agard is the next speaker at the news conference.

She says that American children who woke up this morning and went to school committed "an act of bravery'.

Parents who dropped off their kids this morning at school also were undertaking an act of bravery, she says.

"These are actions that should not require bravery," she says.

"They should be routine and joyful," Agard says, adding that this is especially true ahead of the winter holidays.

Conway says a vigil will be organised this evening at 18:00 local time (00:00 GMT) for the Madison community.

The mayor then goes on to ask people to avoid spreading misinformation about the shooting, particularly through social media.

She adds there is so much that is unknown and police need time and space to investigate.

Image source, US Pool

Barnes hands to Madison Mayor Satya Rhodes-Conway, who says this has been an "incredibly difficult" 24 hours.

She says she never imagined a school shooting would happen in Madison, but "like so many other communities, here we are" and that city will never be the same.

She then points to the "incredible bravery" of students and educators around Madison who went to schools today "not knowing if they would come home" for fear of another attack.

Chief Barnes says that multiple schools have received hoax threats since Monday's shooting.

He adds that Madison Police don't believe there are any threats to local schools

Making "false threats is a crime," he says, vowing to prosecute anyone caught threatening Madison schools - ending his portion of the briefing.

Barnes repeats that the police department is working to authenticate a document, that some are referring to as a manifesto from the shooter.

He says this process involves looking at the suspect's computer to see if it can be linked to the document that has circulated online.

The status of those injured in the attack remains the same, Barnes says.

At this moment, we know that two people are in a life-threatening state, while two others are stable in hospital.

Another two have already been released from hospital.

Madison Police Chief Shon Barnes says that investigators are asking for people who knew the attacker to come forward to help shed light on her potential motive.

"We are asking anyone who knew her or who may have insights into her feelings leading up to yesterday to please come forward," he says.

He adds that police are looking into her social media, but at the moment it "appears the motive was a combination of factors".

Barnes goes on to talk about a document, which has been claimed to be a manifesto from the shooter, that he says has been shared "widely" on social media.

He notes that they cannot verify its authenticity at the moment.

Barnes asks that people to avoid sharing the document, and says the police department will provide an update about it when they can.

Image source, US Pool

Barnes clarifies that the 911 reporting the shooting call came from a second grade teacher.

Earlier, we had heard that it came from a second grade student, who would have been aged seven or eight.

This is not the case, the police chief says - and he apologises for the mistake. He attributes it to misreading of a police log about the incident.

"The past 24 hours have been a flurry of emotion, sadness, anger, disappointment, grief, for the Madison community," begins Madison Police Chief Shon Barnes.

He goes on to thank the American public for their support for the Madison community, and first responders including medical workers, firefighters, and law enforcement for responding to the deadly shooting.

Image source, US Pool

We're about to hear from Madison Police Department and other city officials, who will give an update on yesterday's deadly shooting at Abundant Life Christian School.

You can follow the briefing by pressing watch live above, otherwise stick with us as we bring you all the key lines.

Image source, Getty Images

Barbara Wiers, director of relations at the school, told the media yesterday she was teaching at the time of the attack.

She said the school had conducted active shooter training earlier this year and the information was "very fresh" for educators to put into practice.

Wiers said emphasised handled themselves "brilliantly" in responding to the attack.

"They were clearly scared," she told reporters. "When they heard 'lockdown, lockdown' and nothing else, they knew it was real."

Madison Police just announced on Facebook that the update will be delayed by at least 15 minutes.

It is now expected to begin about 13:15 local time (19:15 GMT). You can stream it live by pressing Watch Live at the top of this page.

Police have also told media that all questions must be delivered in writing ahead of time, which is unusual.