The government had last week gazetted the categories of public authorities that fall within the purview of the RTI.
"From today the public can apply for information which they want," Sankhitha Gunaratne, RTI Manager of Transparency International Sri Lanka chapter said.
"The RTI law is unique in several ways - it overrides all other written law, where there may be contradiction. Furthermore, all information can be revealed if the greater public interest is served by disclosing the information. This applies even where the information sought could potentially fall within the exceptions in the law," she added.
The public authorities then become liable to respond to these requests within the specified timelines, subject to a maximum of 28 days.
RTI was one of the major reform plans of the current unity government announced ahead of the 2015 presidential election.
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