M. Continuo
Guinea-Bissau Speaker sworn in as interim president
The armed forces have pledged to respect the country's constitution after Vieira and a rival, armed forces chief General Batista Tagme Na Wai, were both killed, throwing the tiny and unstable West African state into confusion.
Under the constitution Pereira takes over the presidency for a limited period pending presidential elections.
(Reporting by Alberto Dabo; editing by Alistair Thomson)