Killings and attacks against journalists remained unsolved leading to fears that media freedom is being deliberately and violently suppressed through threats, abductions and attacks, a team of media freedom campaigners said.

"Since August 2005, eleven media workers have been killed in Sri Lanka. Ten of them were killed in government-controlled areas and no one has been caught so far," said Jacqui Park from the International Federation of Journalists.

"Jaffna is one of the most dangerous cities in the world to be a journalist," she said of the northern, government-controlled peninsula cut off from the rest of the country by Tamil Tiger-held territory.

"Authorities seem reluctant to investigate murders and attacks," she said at the end of a five-day visit by international press activists, who last visited the embattled island last October.

"It does not help when senior government ministers endanger lives of media workers by insulting them," said Tom Hughes from International Media Support.

"Authorities must show their bona fides by solving these murders and bringing the culprits to trial," he said, lamenting that there has been "no change" in the situation in Sri Lanka since their last visit.

The fact-finding mission also said the Liberation Tigers of Tamil Eelam (LTTE) and paramilitary forces were instilling a climate of fear in media workers through threats and intimidation.