Turkish investigative journalist Baris Pehlivan, who was ordered to return to prison by text message this month, was jailed on Tuesday for the fifth time in three years, AFP reports.

The justice ministry informed him on August 2 via an SMS message that he had to surrender himself by August 15 to the prison in Silivi on the outskirts of Istanbul, where many of the government critics are held.

Pehlivan's latest book, "SS", accuses former interior minister Suleyman Soylu of having links to organized crime.

"Baris might be released on parole," his lawyer Huseyin Ersoz told AFP. "A decision could be made at any time," he said.

A former editor in chief at Oda TV and contributor to daily newspaper Cumhuriyet, Pehlivan has already been imprisoned four times.

Two of those incidents involved him spending a day behind bars -- once in February and once in May

Pehlivan and six other journalists were sentenced to three years and nine months in prison in 2020 for reporting the funeral of a member of Turkey's MIT secret services who was operating in Libya, where Ankara supports the recognized Tripoli government.

While his death has never been denied by the Turkish authorities, the reporters were charged with revealing "state secrets".

Pehlivan was recalled this time to serve eight months of the 2020 sentence for violating the country's national intelligence laws.

"People go to jail (in Turkey) just for writing the truth, just for doing journalism," Pehlivan said before being sent to prison.

"Mine is a drop in this ocean, in this big fight," he said.

Press freedom advocates last week condemned the "judicial harassment" of the journalist and urged the Turkish government to respect media freedom.

Erol Onderoglu of Reporters Without Borders said Pehlivan was the 13th journalist to be jailed this year.

"Arresting a reporter is an anachronistic attack on public opinion," he commented on Twitter, recently rebranded as X.

Turkey is ranked 165th out of 180 countries in the RSF's latest press freedom index.