SYDNEY - Lindsay Murdoch has been working for Australia's Fairfax media group in Jakarta for the past three years and has written a number of articles highly critical of the Indonesian administration. Indonesia's foreign ministry gave no official reason for not extending Murdoch's journalist's visa, but Murdoch says he was told by a senior official that the decision was based on his "human rights" news reports. Foreign ministry deputy spokesman Wahid Supriyadi is quoted in Monday's Jakarta Post as saying: "It's common policy for a country to decline a visa application without having to provide an explanation". "The government is criticized by the media -- foreign and local -- almost every day. That is not a problem to us ... but we believe it's necessary for journalists to maintain journalism ethics," he said. Murdoch's employers issued a statement Sunday saying they were "gravely concerned" by the decision, which they said had serious implications for media freedom in Indonesia. "It has been made perfectly clear to us that this decision has been taken in reaction to the authoritative reporting of Mr. Murdoch on human rights and related issues in Indonesia," the statement said.