Phone companies might have to store snoop data instead of NSA, Obama says

US President Barack Obama signalled that he might halt the National Security Agency's collection and storage of millions of Americans' phone records and instead require phone companies to hold the data.

Speaking at a White House news conference, Obama said he would have a "pretty definitive statement" on proposed NSA reforms next month.

His remarks suggested that his views have changed significantly since details of the NSA's far-reaching surveillance programmes were publicly revealed in June.

Obama said he believed that his administration had struck the right balance between intelligence gathering and privacy protection but acknowledged that concerns about the potential for abuse might make it necessary to rein in the programmes to restore public trust.

The president said his NSA review, based on the assessments of intelligence officials and other officials inside and outside of the federal government, would determine which programmes to maintain or eliminate, both domestically and internationally.

A White House panel released a report last week questioning whether the NSA's sweeping collection of personal data had played any meaningful role in preventing terrorist attacks.