Federal investigators are continuing to piece together the December shootings that killed two Brown University students and an MIT professor, leaving nine others wounded, authorities said.

Authorities on Tuesday released transcripts of videos they say were recorded by Claudio Manuel Neves Valente, the man responsible for the Brown University mass shooting and the killing of an MIT physicist.

Two Brown students, Ella Cook, 19, and Muhammad Aziz Umurzokov, 18, were killed in the Dec. 13 shooting on the Providence, Rhode Island, campus, and nine other people were wounded, authorities said. Just two days later, Nuno Loureiro, a professor at MIT, was killed in Brookline, Mass.

As of the latest update, eight of the students injured at Brown had been released from the hospital, while one person remained hospitalized.

BROWN UNIVERSITY SHOOTER CONFESSED IN VIDEOS TO PLANNING ATTACK FOR LONG TIME, SHOWED NO REMORSE: DOJ

According to the U.S. Attorney’s Office for the District of Massachusetts, investigators executed a federal search warrant on Dec. 18 at a storage facility used by Neves Valente, a Portuguese national. The FBI recovered an electronic device containing several short videos recorded after the shootings. Transcripts of those videos, translated from Portuguese to English, were released Tuesday.

In the recordings, prosecutors said Neves Valente admitted he had been planning the Brown shooting for a long time and said Brown was his intended target. Authorities said he did not provide a motive for targeting Brown students or the MIT professor.

Investigators said the Bureau of Alcohol, Tobacco, Firearms and Explosives traced the gun used in the shootings as part of the investigation.

Officials have not publicly released details about the weapon’s origin or purchase history. Fox News Digital has reached out to the FBI for comment.

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Josh Schirard, a former tactical emergency response director at the 2018 Santa Fe High School shooting and director of Byrna Law Enforcement, said the transcripts confirm responsibility for the attack but offer little clarity about why it occurred.

“He understood what he did. He understood that he had a why behind it,” Schirard said. “He just didn’t opine on why that was.”

Schirard said the shooter rejected ideological explanations and denied being mentally ill.

EVIDENCE SHOWS DEADLY BROWN, MIT SHOOTINGS MAY BE LINKED, SOURCES SAY: REPORT

“He even says, ‘I’m not mentally ill. I am very sane, and I did this knowing what I was doing,’” Schirard said.

“He talks about how killing those people was hard,” Schirard said, adding that the shooter said he envied people who could do so “without difficulty.”

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An autopsy previously found Neves Valente died by suicide two days before his body was discovered in a storage unit in Salem, New Hampshire.

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Authorities said they do not believe there is any ongoing public safety threat associated with the shootings and that additional updates will be provided.

A Boston woman is dealing with an unwelcome tenant on her front porch — a rat that has turned a baby stroller into a cozy winter hideaway.

The woman shared her ordeal Thursday on the r/Boston subreddit, explaining that she had left her stroller, complete with a muff, on her second-floor porch. When she checked on it later, she discovered a rat had moved in.

“I stupidly left our stroller with a muff out on the porch,” she wrote. “Today I found a big rat is nested in there. I can’t see clearly, but it seems it has chewed up the muff lining and is using the filling for a nest.”

The woman said she’s called a few pest control companies, but instead of offering immediate removal, they just tried to sell her a long-term bait boxing service. 

“…Which is fine, but I urgently need someone to just safely remove the rat and the nest so I can clean or dispose of the stroller if needed,” she wrote, adding that she couldn’t secure a next-day appointment and felt Monday was too far away.

Turning to Reddit for advice, the woman asked whether she should attempt to remove the rat herself, saying she was worried about being bitten or contracting a disease. “Which professional can I call?” she asked.

Redditors reacted with a mix of humor and practical advice. The top comment began, “Sounds like it’s their porch now,” before offering an elaborate plan involving a bucket trap and joking that the rat could then “go on to be a Michelin star chef at a French restaurant,” a nod to the 2007 film “Ratatouille.”

Others suggested she evict the rat by vigorously shaking the stroller or whacking it with a broom, while many urged her to cut her losses entirely and throw the stroller out.

“I honestly wouldn’t ever use it for a small child after a rat had been cribbed up there,” one commenter wrote.

Pest control experts generally advise against handling rats without professional help. According to Terminix, rodents can become aggressive and scratch when threatened and may carry diseases such as hantavirus and leptospirosis.

“When it comes to getting rid of a rat’s nest in the house, DIY treatments won’t cut it,” the company warns on its website.

Boston has been grappling with heightened rat activity in recent years, prompting a citywide rodent action plan known as BRAP. City officials urge residents to “see something, squeak something!” and report rodent activity to 311. Officials said response teams are typically dispatched within one to two days.