Meanwhile, police are investigating the rape and slaying of Marinova, 30, whose body was dumped near the Danube River.
Most worldwide media organisations underlined that the last aired report featuring Marinova was an interview on her new TV show, Detector, where her colleague interviewed Romanian investigative journalist Atila Biro from Rise project and his Bulgarian colleague Dimitar Stoyanov from Bivol, regarding alleged large-scale fraud linked to the misuse of European Union funds by the infrastructure company GP Group.
"Viktoria's death, the brutal manner in which she was killed, is an execution", Yordanov said.
A child holds next to a portrait of slain television reporter Viktoria Marinova during a vigil at the Liberty Monument in Ruse, Bulgaria, Monday, Oct. 8, 2018. The horrific indent is the third murder of a journalist in the European Union amid concerns over press freedom.
Marinova is the third journalist murdered in the European Union within the previous year, Reuters reported.
Chief Prosecutor Sotir Tsatsarov said a bank transfer of 14 million euros ($16.06 million) had been frozen as part of a pre-trial investigation into issues raised by the investigative journalists on the show but declined to give further details. She was not a household name in Bulgaria and was previously best known for presenting a regional lifestyle show.
Marinova's final show was a program about Attila Biro, an investigative journalist with the Rise Project Romania and a colleague from the Bulgarian investigative site Bivol.bg, Dimitar Stoyanov. Investigators are still trying to trace potential witnesses and establish a motive for her killing. In their words, the police officers freed them from the handcuffs an hour later only and did not let them call anyone for a long time.
Germany called Bulgarian law-enforcement authorities to carry out "a quick and comprehensive investigation" into Marinova's murder, stated Deputy spokesperson of German Foreign Ministry Christofer Burger on October 8.
In addition, Swedish journalist Kim Wall was tortured and murdered during a private submarine trip in August 2017.
Last October, Daphne Caruana Galizia, Malta's best-known investigative journalist, was killed when her vehicle was blown up by unknown persons. She had worked on the so-called Panama Papers, leaked documents that revealed financial information about the offshore accounts of high-profile officials. Kuciak was investigating tax fraud.
Reporters Without Borders, in their 2018 country report for India, have stressed the wave of Hindu nationalism promoted by the ruling Bharatiya Janata Party, led by Prime Minister Narendra Modi poses deadly threat to press freedom in India.
Transparency International, a global corruption watchdog, has identified Bulgaria as the most corrupt member state in the EU.