No suspects are in custody and officials did not have any updates to share more than 24 hours after the killing of an MIT professor in his home, according to the DA’s office.

Nuno F.G. Loureiro, 47, was shot at his Gibbs Street home in Brookline Monday night, later dying from his injuries at a local hospital Tuesday morning.

Law enforcement officers from the Massachusetts State Police and Brookline Police are investigating the homicide, according to the Norfolk County District Attorney’s Office, which has jurisdiction over the case.

Some online have tried to link Loureiro’s death to the mass shooting at Brown University that killed two students and wounded nine others Saturday night in Providence.

Both officials from the Providence Police Department and FBI have denied there’s a connection between the separate incidents of violence at the two prestigious schools.

MIT confirmed Tuesday that Loureiro was a member of the faculty at the time of his death. He served as the director of the school’s Plasma Science and Fusion Center, as well as a professor of nuclear science and engineering and physics.

According to his curriculum vitae, Loureiro received his undergraduate degree in physics from the Instituto Superior Técnico in Lisbon, Portugal, then obtained his doctorate in the same subject at the Imperial College London, in the United Kingdom.

“His research addressed complex problems lurking at the center of fusion vacuum chambers and at the edges of the universe,” a campus publication noted.

Neighbors held a vigil for Loureiro home Tuesday night.

Earlier in the day, Louise Cohen, who lived in the same building as Loureiro, told The Herald that she heard shots fired and called the police.

In several social media posts, she described the experience of hearing the shots — “the noise was so loud that my floor and sofa shook” — then a child crying, and coming out of her apartment only to see that Loureiro was barely conscious on the floor of the foyer in their building. She dialed 911 and Brookline Police arrived within a few minutes, she said.

Cohen wrote, “There’s a would-be murderer who seems to have dashed through the heavy front door and down the steps.”