“He never could have saw this coming” and he “doesn’t understand why this guy killed” his housemate, Infiesto said.
Mitra, the professor, said she saw Green at a presentation in 2012. “He looked very happy and relaxed,” she said. “And he said he’s enjoying his graduate school at College Park.”
Xavier Henry, a PhD student at the University of Maryland Eastern Shore who served as a sort of mentor to Green, said he “was the one that kind of helped keep everybody together.”
Inside Green’s off-campus home on 36th Avenue in College Park, though, trouble brewed.
Jeanette Santori, 21, a senior computer science and math major at the University of Maryland Baltimore County, was close with Rane. She said Green was “unhinged.” She said he would tell housemates — without any context — that he was going to “dip out to Las Vegas,” and he advised them to get lawyers after he accused them of hacking his computer. At some point, she said, the housemates learned that Green was keeping weapons in his room.
Another friend, Drew Needham, 21, said Rane would sometimes spend the night at friends’ homes because he was worried about Green.
“It wasn’t expected, but there were definitely indicators that the roommate was not stable,” Needham said.
Police recovered two firearms from Green after the shooting — a 9mm handgun and a .22-caliber Uzi B rifle, both of which he purchased legally. They said he used the handgun in the shooting, and investigators recovered the fully loaded Uzi — along with ammunition, a baseball bat and a machete — in a shoulder bag he was carrying.
The rifle was not used, and investigators did not find a suicide note or plans for more violence.
Santori said the housemates never complained to police, seemingly because they were cautious about interaction with authority.
Still, she said, “I absolutely think it was preventable. It shouldn’t have happened.”
When Green moved in — and how well he knew those he lived with — remained a matter of debate Wednesday. Santori said she thought the date was a few weeks ago; the landlord said it was in September.
That landlord, Bradlee Bolino, said he never received any complaints about Green. He said that like the others in the house, Green had his own lease, and he was unsure if Green was friends with others in the house before moving in.
“It’s a horrible tragedy,” Bolino said. “It just turns your stomach.”
Peter Hermann and Jennifer Jenkins contributed to this report.