Mr. Romero, a host for Radio Globo, which supports the ousted President, Manuel Zelaya, said on Sept. 25: “There are times when I ask myself if Hitler was or was not correct in finishing with that race with the famous Holocaust. If there is a people that do damage in this country, they are Jewish, they are Israelis.”

Mr. Zelaya has sought to distance himself from anti-Semitism, noting in an open letter last week that he had appointed four Jewish cabinet members.

On Monday, the United States ambassador in Tegucigalpa joined the criticism, writing to the radio station’s owner, Alejandro Villatoro, to ask him to denounce what he called “this appalling act.”

“Mr. Romero’s commentary makes a mockery of any pretense he may have of solidarity with people who struggle against injustice,” the ambassador, Hugo Llorens, wrote. He noted that Mr. Villatoro and Mr. Romero had sought his help last week after the police shut down the station under an emergency decree.

Radio Globo’s programming has helped mobilize resistance to the de facto government that took office after Mr. Zelaya was deposed and exiled in a coup on June 28. Mr. Zelaya returned to Honduras on Sept, 21. and he has taken refuge in the Brazilian Embassy.

In phone calls to the media, Mr. Zelaya has charged that Israeli mercenaries had attacked the embassy with high-frequency radio waves and toxic gases. The de facto government has been criticized for such attacks, but there is no evidence of any Israeli involvement.

In a telephone interview on Tuesday, Mr. Romero said that he had asked for forgiveness and would continue asking for forgiveness — in a synagogue if need be — for what he called a “stupidity.”

“I was betrayed by my emotions in the moment,” he said. “I have to assume my responsibility.”

Mr. Romero said that his grandfather was a Jewish immigrant from Czechoslovakia. “It is not my intention to harm the community.”

The Anti-Defamation League estimates that there are only about 100 Jewish families in Honduras.