ISLAMABAD December — Rumors of a Pakistan coup sparked by a government minister being barred from leaving the country have been dismissed after briefly causing flutters in financial markets.

Political tension has risen in Pakistan since the Supreme Court on December 16 struck down an amnesty that protected President Asif Ali Zardari, several of his ministers and thousands of others from corruption charges.

Zardari can still not be prosecuted because he is protected by presidential immunity, but some opposition politicians have nevertheless called on him to step down. His spokesman said he wouldn’t.