Last year set a new record, with 77 murders reported by the agency. The high number is due in part to the murder of some 30 journalists in one day during an ambush in the Philippines on 23 November 2009, the new publication says.

The figure exceeded the previous record of 69 set in 2006, when violence in Iraq was rampant.

The number of journalists murdered dropped in 2007 and 2008, recording 53 and 48 killings respectively, partly because of the improvement of the situation in Iraq.

The report also finds that the percentage of murders between 2008-2009 not linked to conflicts rose in comparison to the previous biennium. Most victims were not foreign war correspondents, but rather local journalists who were working in countries at peace.

“Sadly, the frequency of acts of violence against journalists is increasing,” it notes. “In most cases, impunity precludes the way of justice, and if this trend prevails, journalists will remain easy targets.

“Needless to say this represents a severe threat to freedom of expression and to our ability to seek the truth.”

At least 80 per cent of the 125 murders in 2008-2009 were due to attacks specifically targeting the victims by “those who do not wish journalists to investigate and reveal information of public interest,” the publication finds.

Following up on a 2008 report, the new publication underscores that the absence of threats against journalists is “essential to protect the right of all citizens to reliable information and the right of journalists to provide it without fearing for their security.”

The report's release will coincide with the three-day meeting of the Intergovernmental Council of the International Programme for the Development of Communication (IPDC) in Paris, set to kick off tomorrow.

The body will propose a one-minute silence to be observed in newsrooms around the globe on World Press Freedom Day, 3 May, to honour journalists killed every year.

Since 1997, the head of UNESCO has condemned any physical attacks on journalists, with the current Director-General, Irina Bokova, emphasizing that “only the political willingness of States to bring to justice the murderers of journalists and thus put an end to impunity will, finally, be the best protection for press professionals.