New York: For the second consecutive year, Pakistan has been identified as the most dangerous country for journalists with the killing of seven scribes there in 2011 out of a total of 43 murdered worldwide.

The New York-based Committee to Protect Journalists (CPJ) said, in the past five years 29 journalists had been killed in Pakistan in relation to their work.

"... the CPJ research shows Pakistan to be among the worst countries in the world in bringing the killers of journalists to justice," the body said in its year-end report.

"The best known case in Pakistan this year involved Saleem Shahzad, a reporter for Asia Times online who died in May after writing a report which alleged that al-Qaeda had infiltrated Pakistan navy," the CPJ said.

CPJ's report comes amid a probe by a Pakistani judicial commission in the death of the journalist.

The journalists' organisation quoting Human Rights Watch said Shahzad had complained of receiving threats from Pakistan's ISI before his death and added that the case remains unsolved.

The CPJ annual report pinpointed Mexico as another country with an "atrocious record" of treatment of journalists, saying that three reporters had been killed in the country, most of them after taking on its powerful and ruthless drug mafia.

The report said that the Arab Spring revolution across the Middle East and North Africa had also led to first cases of journalists' death in Syria and Tunisia.

It also noted that there were no deaths of journalists in India this year.

The CPJ executive director summarised that the year 2011 was one of the most "exacting" for journalists with political conflict and unrest proving deadly.