The prime minister said "false information carried by certain foreign media" about the president's health undermined Algeria's security and development, the Algerian Press Service (APS) reports.
Recently retired army chief Hartono, now the information minister, could be a prime beneficiary of such an effort.
They were acting on information from the UK authorities, Australian Prime Minister John Howard said.
Japan's Prime Minister Naoto Kan ordered his ministers to step up information-gathering and be prepared for emergencies.
On Sunday, Israeli Prime Minister Benjamin Netanyahu defended the necessity of keeping some information out of the public domain.
The ideas follow a push, announced by the Deputy Prime Minister Nick Clegg earlier this year, to make information about social mobility more transparent.
In his memoirs, former Prime Minister Tony Blair was particularly outspoken about the Freedom of Information Act, a law introduced when he was in Downing Street.
He said it was not the job of the prime minister to order prosecutions, but that "huge amounts of information" had been made available to police and prosecuting authorities.
BBC: Stafford Hospital scandal: PM calls for 'accountability'
The local workforce as a whole has attracted the attention of authorities ever since Prime Minister Abdelmalek Sellal said last Monday that the 32 militants had obtained information about the plant's workings and arrived with a former driver from the facility.
WSJ: Algeria Probes Possible Role of Local Workers in Attacks
During this two-day visit, the Director-General is scheduled to hold bilateral meetings with Mr Lee Hsien Loong, Prime Minister of Singapore, Rear Admiral Lui Tuck Yew, Acting Minister for Information, Communications and the Arts, and Dr Ng Eng Hen, Minister of Education and Chairman of the Singapore National commission for UNESCO.
Mr Clark's probable replacement as head of a revamped Cabinet Office was thought to be Peter Mandelson, the prime minister's fixer, who has been notably unenthusiastic about the freedom of information bill.
LONDON, England (CNN) -- British Prime Minister Tony Blair stood firm Wednesday on his government's use of intelligence information on Iraq's weapons of mass destruction, saying he had "no doubt at all" of its accuracy.
The prime minister shut down parliament in 2008 to avoid losing a vote of confidence, and withheld information from parliament on defence spending and the treatment of Afghan detainees by Canadian soldiers.
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