Four former Serbian spies have been jailed for the murder of journalist Slavko Curuvija in 1999.
A Belgrade court jailed two of the defendants for 30 years each, while two others received 20-year sentences.
Curuvija, an outspoken critic of the late Serbian leader Slobodan Milosevic, was gunned down outside his apartment.
Media freedom group Reporters Without Borders said it was the first time in recent history that anyone had been jailed for killing a journalist.
In its verdict, the court said an “unknown person” had ordered the hit. Curuvija’s family have in the past accused Milosevic, who died in 2006.
“[This] sends a clear message that crimes against dissenting voices cannot remain unpunished,” the Slavko Curuvija Foundation also said in a statement.
Who was Slavko Curuvija?
Mr Curuvija was the editor and owner of Dnevni Telegraf – Serbia’s first independent daily newspaper – and Evropljanin magazine.
He wrote several reports on Kosovo, including a series of articles on political prisoners in what was then Yugoslavia.
His publications were fiercely critical of Milosevic, and became targets of a government crackdown on national media.
The journalist was killed in April 1999, days after a pro-government newspaper published an opinion piece alleging that he supported Nato’s air strikes on the former Yugoslavia.
The raids were intended to halt Serbian violence against ethnic Albanian civilians in Kosovo, fomented by President Milosevic.
Milosevic died in 2006 whilst on trial for war crimes at a UN court in The Hague.
Mr Curuvija was shot 14 times and died outside his Belgrade apartment in April 1999.
His family believe President Milosevic personally ordered his murder, though no-one has yet been identified.
Four men were eventually charged and, on Friday, convicted. Former secret police chief Radomir Markovic, and Milan Radonjic, who headed the intelligence branch for Belgrade, were jailed for 30 years each.
Former intelligence officers Ratko Romic and Miroslav Kurak were also handed 20-year prison terms for aggravated murder. Kurak is on the run.
The court ruled that Markovic had told Radonjic of plans to murder the journalist – Radonjic then conspired with Romic and Kurak to carry out the killing.
According to the indictment, Kurak pulled the trigger while Romic acted as an accomplice.
Markovic is already serving a 40-year sentence for several crimes, including the murder of Serbian President Ivan Stambolic, whose body was found in 2003, 13 years after he disappeared.
In 2017, both Romic and Radonjic were also acquitted of attempting to murder political opposition leader Vuk Draskovic.
Over 100 witnesses testified during the trial, which first opened in June 2015.
The court has made several controversial rulings. Back in 2017, the court released Romic and Radonjic from custody and placed them under house arrest instead, ordering them to wear electronic tags.
Crucial phone records allegedly placing the suspects at the scene of the crime were also dismissed by judges on two occasions. Both decisions were later overturned on appeal.
The court also refused to hear testimony from a police inspector, Dragan Kecman, who collected the phone records. This decision was also overturned and Mr Kecman appeared in court last year.
During his testimony, Mr Kecman said that the Serbian regime considered Mr Curuvija to be “state enemy number one.”