NICOSIA, Cyprus — As the European Central Bank threatened to shut off crucial financing for banks in Cyprus without a rapid accord on an international bailout, members of Parliament put off a vote on Thursday on yet another revamped formula. The vote was rescheduled for Friday.

The mood in the streets turned increasingly dark. Police officers clashed with protesters as about 200 gathered outside Parliament.

Those involved in the scuffles included employees of Cyprus Popular Bank, the country’s second-largest bank, who had turned out amid rumors that it could be shut down within hours. The central bank issued a denial but warned that Cyprus Popular Bank risked an immediate default if Parliament did not pass the bailout measure.

After the government said banks would remain closed until Tuesday to allow time for a bailout deal to be reached, residents flocked to cash machines in growing numbers. Lines of three dozen people or more, withdrawing as much money as possible, were common sights.