Armenak Mnjoyan, who was serving a life sentence in Armenia, has died.

“Armenak Mnjoyan was 54 years old,” reads, in particular, the respective statement posted on the Free Arsen Arzrouni Facebook page.

Mnjoyan’s health condition grew worse on Thursday morning, at the Nubarashen penitentiary in capital city Yerevan. He was hospitalized having suffered a heart attack and swelling of the lungs.

Armenak Mnjoyan was arrested in 1995, and in 1996, he was sentenced to death.

But in 2003, and by a decree of the President of Armenia, Mnjoyan’s death sentence was commuted to life imprisonment.