DNA evidence from a second person has reportedly been found in the apartment where a top Argentinian prosecutor was found shot to death.
Authorities said they are calling on an individual who may have been in Alberto Nisman's home around the time he was killed to provide a DNA sample, the Associated Press reported.
They did not name the person, but a consultant named Diego Lagomarsino acknowledged he had been in the apartment the day before Nisman was found dead, according to the AP.
Lagomarsino has admitted he gave Nisman the gun that was found in the apartment with the prosecutor's body. Lagomarsino said Nisman asked for it because he was afraid for his safety.
The new evidence is the latest twist in the strange and mysterious saga that has unfolded since Nisman's death last month.
Nisman died shortly before he was set to testify on accusations that President Cristina Fernandez de Kirchner and some of her top officials had tried to hide Iran's involvement in a 1994 terror attack.
Investigators initially said they believed Nisman's death was a suicide, but many questioned that claim, including, eventually, Fernandez herself.
Fernandez has blamed rogue intelligence agents for Nisman's death, and asked Congress to dissolve the intelligence service. She has also claimed the rogue agents misled Nisman on the probe into the bombing, and then killed him.