Buenos Aires, January 23 (RHC-teleSUR)-- Argentinian President Cristina Fernandez said Thursday through her personal website that she does not believe late attorney Alberto Nisman committed suicide, revealing new evidence in the case.

The evidence, posted in the president's article, shows a screen shot from a chat group in which the late attorney announced to his closest friends his return to the country in a triumphant tone.

“Why would someone who committed suicide write a message such as the one attorney Nisman wrote in a private chat group to his friends upon his unexpected return to the country?” she asked.

The president also posted a picture which the late attorney sent to Waldo Wolff –- head of the Delegation of Israeli-Argentinian Associations (DAIA) -- on Saturday night, showing highlighters and papers, preparing ahead of Monday's Congress hearing.

Argentinian authorities also questioned Diego Lagomarsino, the man who lent the gun to Nisman that was found in his apartment Monday morning.

Lagomarsino revealed that Nisman borrowed his gun after former Head of Intelligence Jaime Stiusso called him and warned him to watch out for his and his family's security.

New questions are emerging after these revelations, such as the reason why Nisman returned unexpectedly from his trip in Europe, or the reason why he would borrowed a gun when he himself owned several, which reinforces the theory that outsiders were involved.

Alberto Nisman was a Federal Attorney investigating the 1994 bomb explosion in the Argentine Israeli Mutual Association (AMIA) and was set to announce new findings in a Congress hearing Monday. That day he was found dead in his home just hours before his scheduled appearance.