Omer Guney died in a Paris hospital on December 17 from complications arising from a brain tumour. He was the only suspect facing trial for the deaths of Sakine Cansiz, a founder of the Kurdistan Workers Party (PKK), Fidan Dogan, and Leyla Soylemez.
The trial of Guney, a Turkish national, was due to commence on Monday but all court proceedings have been dropped, Reuters reported citing judicial sources.
The bodies of the three women were found by French police in a Kurdish information centre in Paris in January 2013. They were killed with gunshots to the head.
French officials investigated Guney for links with Turkish intelligence. Guney maintained his innocence of the crime and Turkish officials denied they were involved.
.jpg&w=3840&q=75)