Ethnic Tigray people all over the country report an increase in discrimination and abuse from the authorities.

On a bright day in mid-November, about a dozen police officers with machine guns barged into the home of Lisanewerk Desta, a theologian who is the head of the library and museum department at the Ethiopian Orthodox Church, and got to work.

The men, who had no warrant, Mr. Desta said, poured dried goods from his kitchen onto the floor, emptied his clothes drawers and even looked inside his clay coffee pot, seemingly searching for something to incriminate him. They confiscated only one item, he said: his Ethiopian identification card, which shows that he is from the Tigray ethnic group.

“I’m a scholar of the church, I’ve got nothing to be afraid of,” said Mr. Lisanewerk, who in an interview at his home shared photos and videos that his daughter had surreptitiously recorded of the raid. “But now I am under suspicion.”

Tigrayans belong to one of about eight major ethnic groups in Ethiopia, and for nearly three decades, they were the dominant force in the country’s politics. But life for many Tigrayans began to change in early November after Ethiopia’s prime minister, Abiy Ahmed, launched a military operation in the northern region of Tigray, whose leaders have resisted Mr. Abiy’s drive to centralize power in the federal government.

Nearly 50,000 Tigrayans have fled the country, in what the United Nations has called the worst exodus of refugees Ethiopia has seen in more than two decades.

Since then, many ethnic Tigrayans who live in the capital and other parts of Ethiopia say they have been treated like criminal suspects and subjected to various forms of discrimination, harassment and abuse by government officials.

They report being detained without charges, put under house arrest, and barred from traveling outside the country. Tigrayans say they have had their businesses shut down, homes ransacked and money extorted by security officials.

Several Tigrayans who live outside Ethiopia said they hadn’t heard for weeks from family members who were taken away suddenly to police stations and prisons. Some Tigrayan members of the Ethiopian military forces are being held in detention centers around the country, their families said.

The reports of ethnic profiling of Tigrayans, who represent about 6 percent of Ethiopia’s population of 110 million, are alarming to the delicate mix of people and power that makes up Ethiopia. The country is an uneasy confederation of 10 ethnically identified states, including Tigray, where fighting continues even though the national government has declared victory.

The moves have drawn concern from the United Nations Office on Genocide Prevention, which said that cases of ethnic profiling constituted “a dangerous trajectory that heightens the risk of genocide, war crimes, ethnic cleansing and crimes against humanity.”

Ethiopia’s attorney general, Gedion Timothewos, acknowledged last month that there had been “isolated incidents” in which law enforcement agencies “acted out of line.” But he said that the government takes the issue of ethnic profiling very seriously, and that it would establish a dedicated hotline for the public to report their complaints.

“We are doing everything within our power to make sure there will not be arbitrary or discriminatory measures,” he said, adding, “This is something that the government denounced.”

While the fighting has so far been confined to the Tigray region in the north, Tigrayan civilians in other parts of the country say they are feeling the spillover effects.

The 35-year-old manager of an accounting firm — who for fear of retribution from the government asked to be identified only by his given name, Sharon, which like many Ethiopians he also uses as his surname — said that last month his house in the Ethiopian capital, Addis Ababa, was raided by security officers in plain clothes who tore open his mattress and couch and smashed his washing machine.

“The problem here now is if you have any blood from Tigray, you are being discriminated” against, Mr. Sharon, who is of mixed ethnic Tigray and Amhara heritage, said. “This kind of fight, it won’t end.”

Nytimes