Jennifer Crumbley was "irritated" and "kind of frustrated" when police took her into custody in the aftermath of a shooting at her son's Michigan high school, a detective testified at her trial Wednesday.

Days before, her son Ethan Crumbley, then 15, killed four people and wounded seven others at Oxford High School, about 45 miles north of Detroit. She and her husband had gone into hiding after being charged in connection with the massacre but authorities found them sleeping at a Detroit art gallery five days after the Nov. 30, 2021 shootings.

"I could tell she was kind of frustrated," Det. Lt. Sam Marzban of the Oakland County Sheriff's Department told jurors. "I told her there were several dead kids ... and that this was a significant incident, that it was on the national news and that the president had addressed it."

"Was Jennifer Crumbley crying?" Oakland County Prosecutor Karen McDonald asked.

She was not, he answered, but Marzban said he recalled Crumbley saying, "'Lives were lost today, and he's going to have to suffer.'

"The choice of words was odd for me," he said.

In the days before the shooting, prosecutors have said, Ethan Crumbley was depressed, lonely and hallucinating. The teen texted his mom that he was seeing demons throw bowls around the house, and hearing toilets flush when no one was home.

His parents were called to the school when Ethan drew a picture of a gun on a math worksheet with a bleeding body and the words, "The thoughts won't stop, help me." A day before, a teacher saw Ethan searching for ammunition on his phone, and when the school contacted Jennifer Crumbley, she texted her son, “Lol. I’m not mad at you. You have to learn not to get caught,” according to the prosecutor's office.

The Crumbleys, prosecutors said, promised to get help for Ethan, but declined to take him home and then returned to work without telling the school their son had access to a gun. Ethan went back to class; two hours later, at about 1 p.m., he came out of a bathroom and opened fire on the school with the gun, which was in his backpack.

Marzban was the first person to testify Wednesday in the ongoing trial of Jennifer Crumbley, who's charged with involuntary manslaughter linked to the Nov. 30, 2021 shooting spree at Oxford High School. Ethan Crumbley pleaded guilty and was sentenced to life in prison. His father, Jennifer's husband James Crumbley, will be tried separately beginning March 5.

A day earlier, a teacher saw Ethan searching for ammunition on his phone. The school contacted his mother, Jennifer Crumbley, who then told her son in a text message: “Lol. I’m not mad at you. You have to learn not to get caught,” the prosecutor’s office said.

The detective told the jury and Oakland County Circuit Court Judge Cheryl Matthews his job included identifying the shooting victims; he provided graphic details about a scene he called "kind of surreal," including one victim who was still wearing her backpack when he found her in the hallway.

Jennifer Crumbley, the first parent in the U.S. to stand trial on charges stemming from a child's mass shooting, went on the run with her husband after the shooting. The prosecution is arguing that the Crumbleys were selfish and uncaring, ignoring their son's spiraling mental illness and buying him the gun that he used in the shootings rather than seeking help for him.

The Crumbleys' lawyers say they had no way of knowing or predicting that their son might go on a murderous spree, that the gun was secured and the charges are overreaching.

When the Crumbleys were discovered at a Detroit art gallery days after the shooting, Marzban testified, Jennifer Crumbley "did not want to give me her phone. She seemed irritated.” He said her husband told her the police would eventually get the phone, so she turned it over and gave him the password.

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Marzban also helped secure a search warrant of the Crumbleys' house after identifying Ethan through items found in his backpack, including his cellphone.

The phone had texts from Jennifer Crumbley that said, “Ethan don’t do it,” about an hour after the shooting had been reported. Another text from James Crumbley read, "Ethan, call me now."

The jury Wednesday also saw video footage of the Crumbleys' arrest and heard from the person who called 911 to report where the couple was sleeping, a business owner nearby who recognized the description of the Crumbleys' car from posters circulating after the shooting.

The prosecution has said it expects to rest its case by Friday and it still had nine witnesses to put on the stand.

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