Alberto Nisman's ex wife has announced an independent investigation in Nisman's death found the prosecutor had been murdered.

Although the official investigation has not ended, Nisman's family claims the results of the investigation show there were many inconsistencies in the original accounts.

According to the Buenos Aires Herald, Nisman's ex wife, Judge Sandra Arroyo Salgado, told reporters on Thursday that a private investigation she paid for revealed the prosecutor investigating the 1994 AMIA bombing was killed.

"Violent death only has three hypothesis: accident, suicide and homicide," Salgado explained. "The report we present today bluntly dismisses the first two hypothesis, that is, suicide and accident. We can only conclude that Nisman was, without a doubt, a murderer victim ... We only sought the objective, scientifically verifiable truth."

She continued to explain that the Nisman family was not included in the autopsy investigation and report, which "would have cooperated and enriched" the process, according to a judge. She added that the judge and prosecutor in charge of investigating Nisman's death can have access to the report.

"Alberto Natalio Nisman did not suffer an accident, did not commit suicide. Nisman was killed, it is an assassination of unknown proportions that deserves an answer from the authorities of the Republic," Judge Arroyo Salgado said.

The New York Times reports initial statements from the government claimed Nisman was drunk when he died and added there was an open bottle of vodka in the residence.

After being killed, Nisman's body was moved, Judge Arroyo Salgado's investigation found. It added that he suffered "anguish" before dying.

Viviana Fein, the prosecutor in charge of Nisman death investigation, said she would look through the independent report and decide on its findings next week, according to La Nacion.

"I can not dismiss what the complaint says," said Fein, adding: "I have always worked very seriously and anyone who verifies the work we have done in other cases will find we always seek the truth."

Nisman was found dead on Jan. 19 at his home in Buenos Aires one day before speaking to the country's congress. He had accused President Cristina Fernandez de Kirchner of covering up Iranian involvement in the 1994 AMIA bombing.