President Donald Trump has suspended the US green card lottery scheme in the wake of a mass shooting at Brown University last week in which two people were killed.

The suspect, a Portuguese man who was found dead on Thursday, entered the country through the diversity lottery immigrant visa programme (DV1) in 2017 and was granted a green card.

Homeland Security Secretary Kristi Noem said she has paused the visa scheme under Trump's direction to "ensure no more Americans are harmed by this disastrous programme".

US officials said they believe the suspect, 48-year-old Claudio Neves Valente, also killed Portuguese Massachusetts Institute of Technology professor Nuno Loureiro earlier this week.

The programme makes up to 50,000 visas available each year through a random selection process among entries from countries with low rates of immigration to the US.

Writing on social media, Noem said Trump had previously "fought to end" the scheme in 2017 after eight people were killed in a truck-ramming attack in New York City.

Uzbekistan national Sayfullo Saipov, an Islamic State supporter who is serving multiple life sentences for the attack, entered the US through the DV1 scheme, according to Noem.

Her comments come just hours after Neves Valente was found dead in a storage facility in Salem, New Hampshire, from what police believe is a self-inflicted gunshot wound.

Police said video evidence and tips from the public led investigators to a car rental location where they found the suspect's name and matched him to their person of interest, following a six-day multi-state manhunt.

He was found dead with a satchel and two firearms. Evidence in a car nearby matched to the scene of the shooting at Brown University in Providence, according to Rhode Island Attorney General Peter Neronha.

Brown University President Christina Paxson said Neves Valente was enrolled at the Ivy League school from the autumn of 2000 to the following spring, and was studying for a PhD in physics.

He had "no current active affiliation" to Brown, she said.

Officials said they believe Neves Valente shot and killed MIT professor Nuno F Gomes Loureiro, 47, on Monday at his home in Brookline, which is about 50 miles (80km) from Providence.

Both men had studied at the same university in Portugal in the late 1990s, police said.

Officials said the cases were linked when the suspect's vehicle was identified via CCTV footage and a witness at Brown University.

The same car was spotted near the scene of the professor's shooting, which happened just two days later.

Authorities have not provided any suspected motive for either of the attacks.

Two students were killed and nine others were injured as a gunman burst into Brown University's engineering building on 13 December and opened fire during final exams.

They have been identified as Ella Cook, 19, a second-year student from Alabama, and Mukhammad Aziz Umurzokov, 18, an Uzbek-American who had just started at the university.

Parents of children with thalassemia in India say they are devastated after life-saving blood transfusions left their children HIV-positive, confronting them with illness, social stigma, and uncertainty.

Thalassemia is a genetic blood disorder that requires regular transfusions to manage severe anaemia and sustain life.

On Wednesday, authorities in central state of Madhya Pradesh said five children with thalassemia, aged three to 15, have tested positive for HIV, prompting concerns over blood transfusion practices. A committee has been set up to investigate the cases.

The families are from Satna district. Although the infections were detected during routine screening between January and May 2025, they drew wider attention after local media reports earlier this week.

The cases follow a similar incident in the eastern state of Jharkhand weeks earlier, where five children with thalassemia, all under eight, were found to have contracted HIV after blood transfusions at a state-run hospital.

HIV, or human immunodeficiency virus, spreads through unprotected sex, unsafe medical practices, infected blood transfusions, or from mother to child during pregnancy, childbirth or breastfeeding.

While no longer a death sentence, it requires lifelong management. In India, more than 2.5 million people live with HIV, with about 66,400 new infections each year. Over 1.6 million are on lifelong treatment at antiretroviral therapy (ART) centres, government data shows.

Satna district collector Satish Kumar S said the five children had received blood transfusions at different locations, involving multiple donors.

Health officials said these included government hospitals and private clinics, and that all the children are now receiving treatment.

In one case, officials said both parents of a three-year-old were HIV positive. In the other cases, the parents tested negative, ruling out mother-to-child transmission.

Satna's chief medical and health officer Manoj Shukla said children with multiple transfusions are considered high-risk and are routinely screened for HIV.

"Once detected, treatment was started immediately and is continuing. At present, the children are stable," he said.

Every unit of blood issued by the district hospital's blood bank is tested according to government protocol and released only after a negative report, Dr Shukla says.

However, in rare cases, blood donors who are in the early stages of HIV infection may go undetected during initial screenings but test positive later, he adds.

Cases of thalassemia patients contracting HIV during treatment are not new in India.

In October, after similar incidents in Jharkhand, authorities suspended a lab assistant, the doctor in charge of the HIV unit and the chief surgeon of the state-run hospital involved.

Chief Minister Hemant Soren also announced an assistance of 200,000 rupees ($2,212; £1,655) for each affected family.

In 2011, authorities in Gujarat launched an investigation after 23 children with thalassemia tested positive for HIV following regular blood transfusions at a public hospital.

Last week, thalassemia patients urged India's parliament to pass the National Blood Transfusion Bill 2025, saying it would strengthen regulation of blood collection, testing and transfusion.

Campaigners, including patients who contracted HIV through unsafe transfusions, called the bill a long-awaited step towards safer, quality-assured blood for those reliant on frequent transfusions.

In India, where healthcare access can be limited, especially in rural areas and small towns, families of the HIV-infected children in Madhya Pradesh and Jharkhand are deeply concerned.

"My daughter was already suffering from thalassemia. Now she has got HIV, all thanks to the pathetic medical facilities of Madhya Pradesh," said one father, whose child is among those affected.

Another parent said their child was struggling with side-effects of HIV medication, including vomiting and constant fatigue.

In India, HIV still carries strong social stigma, often leading to discrimination. In Jharkhand, the family of a seven-year-old boy was forced to leave their rented home after the landlord learned of the child's HIV status, the father told the BBC.

"I tried to convince them a lot, but they remained adamant on getting the house vacated. So, I had to return to my village, about 27km [17 miles] away," said the father, who is a farmer.

"In the village, it is not only a challenge for my son to get better health facilities, but he is also deprived of a good education."

Additional reporting by Mohammad Sartaj Alam in Jharkhand

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