Germany said on Friday it has stepped up security at its diplomatic missions in the Muslim world in the wake of violent protests touched off by a film mocking Islam posted on the Internet.
"The foreign ministry has bolstered security measures at embassies and consulates in Islamic countries," the ministry told AFP in an email in response to a query a about a media report that Germany had closed embassies.
"We cannot provide details about individual measures for security reasons."
The heightened measures came after Washington's ambassador to Libya was killed during a mob attack in the city of Benghazi Tuesday, and after anti-US protests in Cairo.
Demonstrations have spread across the Middle East and further afield, including to Bangladesh, Iran, Iraq, Israel and the Gaza Strip, Kuwait, Sudan and Tunisia.
The White House said security had been tightened at US diplomatic missions around the globe.
The online service of news weekly Der Spiegel had reported that several German embassies had been shuttered due to fears of further attacks, including missions in North African states as well as Afghanistan and Pakistan.
It said that other German institutions and offices of development aid organisations had also been advised to do more to protect their staff.
A key catalyst for the bloody conflagration in the Muslim world was an amateurish film denigrating the Prophet Mohammed and allegedly linked to evangelical and Coptic Christians in the United States.