A man who was in contact with a female student who opened fire at a private religious school in Wisconsin, killing two people before apparently taking her own life, has been arrested in the US.

A 20-year-old California man told the FBI he had been messaging Natalie Rupnow, 15, about attacking a government building with a gun and explosives, according to a restraining order issued under the state’s gun red flag law.

Under the order, a judge directed the man to give up his guns and ammunition within 48 hours because he posed an immediate danger to himself and others.

It was issued on Tuesday, the day after Rupnow opened fire at the Abundant Life Christian School in Madison, Wisconsin, killing a student and teacher and injuring six others.

Two of the wounded are still in a critical condition.

The court documents do not name the man from California or say what building he targeted, when he planned to launch his attack, or what he and Rupnow discussed.

Rubi Patricia Vergara, 14, from Madison, was identified in an obituary published on Wednesday as the student killed in Monday’s attack.

Vergara was “an avid reader, loved art, singing and playing keyboard in the family worship band,” the obituary said.

The teacher who died was 42-year-old Erin Michelle West, the Dane County medical examiner said on Wednesday evening.

The school’s communication director Barbara Wiers said Vergara had been there since pre-school, while West worked there as a substitute teacher for three years before becoming an on-site substitute teacher.

Madison Police Chief Shon Barnes said officers “may never know what she [Rupnow] was thinking that day”.

He added: “I do not know if she planned it that day or if she planned it a week prior. To me, bringing a gun to school to hurt people is planning. And so we don’t know what the premeditation is.”

Rupnow had two handguns, Chief Barnes said, but could not say how she obtained them and he declined to say who bought them because of the ongoing investigation.

Online court records show no criminal cases against her divorced parents, Jeffrey and Mellissa Rupnow.

Divorce records indicate that Natalie, who mostly lived with her father, was in therapy in 2022, but don’t say why.

The school shooting was the latest among dozens across the US in recent years, including especially deadly ones in Newtown, Connecticut, Parkland, Florida, and Uvalde, Texas.

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But the Wisconsin shooting stands out because school shootings by teenage females have been extremely rare, with males in their teens and 20s carrying out the majority of them, David Riedman, founder of the K-12 School Shooting Database, said.

Five members of the same family, including a two-year-old girl, have been found dead at a home in the US state of Utah.

A 17-year-old boy was also found alive but with gunshot wounds.

It is not yet clear whether he is a suspect or victim in the case, according to local police.

Roxeanne Vainuku, police spokesperson for West Valley City, a suburb of Salt Lake City, said it’s thought to be an isolated incident and “we do not believe there’s a suspect on the loose”.

A nine-year-old girl and 11-year-old boy were found alongside the 2-year-old and a man, 42, and woman, 38.

It has not been revealed how the five people died and forensic teams have been at the house as part of a homicide investigation.

Police were alerted on Tuesday by a concerned relative who entered the home through the garage and found the 17-year-old boy alive.

The boy “suffered a pretty significant injury”, Ms Vainuku said, adding that “we’ve not really been able to communicate with him”.

When officers arrived they discovered the victims in the main part of the home.

The victims appeared to match what police know about who lived at the house – a family with two parents and four children ages 2 to 17, Ms Vainuku said.

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Police were initially called to the home on Monday after a relative said the woman who lives there had not been in touch for a few days.

Officers did not get any response and left, as there was no sign of an emergency, before returning on Tuesday evening when the same women called them again.

West Valley City is about 10 miles (16km) southwest of Salt Lake City.

A death row inmate’s last words were “let’s get this over with” before he became the first person to be executed in the US state of Indiana in 15 years.

Joseph Corcoran, 49, died by lethal injection on Wednesday for the 1997 murders of his brother, his sister’s fiancee and two other men.

He had been on death row since 1999 and was executed despite his legal team and campaigners appealing to Indiana Governor Eric Holcomb to use his powers to grant clemency.

In a petition to the federal courts, including the US Supreme Court, the quadruple murderer’s lawyers maintained that he suffered from “severe and longstanding paranoid schizophrenia”.

They added that this was documented in self-published books from prison in which he described being subject to “ultrasonic surveillance”.

Deputy public defender Joanna Green said on Tuesday: “If the courts do not stay the execution, we are asking Gov Holcomb to grant clemency to Joe, a seriously mentally ill man.”

It came a day after a federal appeals court ruled that Corcoran was mentally fit enough to be executed.

Anti-death penalty groups had spent the past few days demonstrating outside Indiana’s state capitol building which houses the office of Mr Holcomb, the Indiana General Assembly and the Indiana Supreme Court.

They also delivered letters to Mr Holcomb’s office urging him to grant clemency.

Holcomb’s office did not immediately respond to a request from Sky News’ US partner network NBC News on Tuesday.

The governor announced in June that the state had procured pentobarbital, a sedative used in lethal injections, after “years of effort”.

He said at the time: “Accordingly, I am fulfilling my duties as governor to follow the law and move forward appropriately in this matter.”

Corcoran’s last meal

The Indiana Department of Correction began the execution process shortly after midnight local time on Wednesday and Corcoran was pronounced dead around 44 minutes later.

The department said his last words were: “Not really. Let’s get this over with.”

Corcoran requested Ben & Jerry’s ice cream as his last meal, the department added.

Ahead of the execution, anti-death penalty campaigners criticised the Indiana Department of Correction for carrying out the process without media witnesses.

Of the 27 states that still allow for capital punishment, only Indiana and Wyoming exclude media witnesses, according to the Death Penalty Information Centre.

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‘It’s going to ruin Christmas’

Before the execution, David Frank, the president of the Indiana Abolition Coalition, made reference to Christmas when he said: “One week before we welcome the light of the Prince of Peace into the world… the state in secret, under cover of darkness, plans to take the life of Mr Corcoran.”

Meanwhile, Corcoran’s sister Kelly Ernst, whose fiancee Robert Scott Turner was one of his victims, said she believes the death penalty should be abolished and criticised the state’s decision to execute her brother a week before Christmas.

Ms Ernst said: “My sister and I, our birthdays are in December… I mean, it just feels like it’s going to ruin Christmas for the rest of our lives. That’s just what it feels like.”

What was Corcoran convicted of?

Corcoran was 22 when he fatally shot his brother James, 30, at the home they shared in Fort Wayne, Indiana.

He also killed Turner, 32, and friends Douglas Stillwell and Timothy Bricker, both 30.

Five years earlier, Corcoran was acquitted of the murders of his parents, Jack and Kathryn Corcoran, after jurors found not enough evidence to convict.