Authorities can not yet say whether or not Marinova's murder in the northern Bulgarian city of Ruse was linked to her work as a broadcast journalist, according to Bulgarian Chief Prosecutor Sotir Tsatsarov.
"It is about rape and murder", Marinov said Monday, apparently concluding at the time that there was no evidence to suggest the killing was linked to Marinova's work. "He has been charged in absence for two crimes - rape and premeditated murder with extreme cruelty", Tsatsarov said.
The body of 30-year-old Marinova - who presented a current affairs talk programme called "Detector" for the small TVN television channel - was discovered on a riverside path in the northern Bulgarian town of Ruse on Saturday. The 30-year-old journalist told him she was working on an investigation but didn't feel anxious about her safety and had not received threats.
No link has been established to her work so far and Borissov criticized Bulgarians who he said had rushed to mention Bulgaria along with Malta and Slovakia, where journalists had been killed recently for their work.
"Our work is continuing".
"There is physical evidence to link to the murder", Marinov said on Wednesday.
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The third journalist to be killed in an EU country this year, the case has raised fears among European governments and rights groups about the risks of reporting and the dangers women journalists face. Caruana Galizia was killed in a auto bombing in October in Malta and Jan Kuciak was murdered in Slovakia in February. "In the frame of three days I read monstrous things about Bulgaria and none of which was true", he said.
European Commission First Vice-President Frans Timmerman said he was "shocked by the horrendous murder". "Again a courageous journalist falls in the fight for truth and against corruption", he tweeted Sunday, not long after the news of the murder broke.
The RSF World Press Freedom Index also states that there is a "growing animosity towards journalists".
The interior ministry said prosecutors were investigating GP Group, a large private Bulgarian building company alleged to have misused the European Union money, and froze 14 million euros (£12 million) in assets. His repeated attacks on the media's credibility and legitimacy have wide-ranging and unsafe implications for the safety of journalists and press freedom.
Marinova was a director of TVN, a TV station in Ruse, and a TV presenter for two investigative programs. "Our thoughts remain with Viktoria Marinova's family and friends", he said in a statement.
Her death has shocked and angered many in Bulgaria, where people are frustrated with corruption and an inefficient judiciary that has been criticized by the European Commission.
Vigils in Marinova's memory were held Monday evening in Ruse, the capital Sofia and other cities.