“In Honduras, drug trafficking is politics,” Mr. Sabillón said.

“I arrested eight drug traffickers and extradited them to the United States,” he said. “And then businessmen, politicians and even the son of a president have fallen.”

Mr. Sabillón said he had testified at the attorney general’s office about the links between organized crime and politicians. “With all the formalities, I handed over important documents to the prosecutor that involve political personalities in organized crime,” he said.

The leaked documents do not suggest that Mr. Sabillón had any role in the assassinations. But they do indicate that he was aware of the documents and asked for them to be kept under guard.

He argued that his signature was faked, and that he did not have the authority at the time to make such a request. He said the documents had been written later by someone in the police force.

His reason for speaking out now, he said, is that he wants to “end the work I began,” referring to the extradition of drug traffickers. He said the fabrication and leak of the report were part of an effort to “neutralize the Honduran national police, which is not in favor of the government.”

He accused the government of handing control of the security forces, including the police, to the military in an effort to shore up control as President Juan Orlando Hernández seeks re-election.

In response to the documents, Mr. Hernández appointed a commission last week that he put in charge of purging the police. Late Thursday, the commission recommended that Mr. Sabillón, along with a police chief named as a chief conspirator in the documents, Ricardo Ramírez del Cid, be suspended during the investigation. Ebal Diaz, an adviser to the president, told Honduran reporters that Mr. Sabillón had been suspended for criticizing the government on television.