Security personnel sealed off the office of German Chancellor Angela Merkel on Wednesday due to the presence of a suspicious package.
A spokesperson for German Federal Police told the Reuters news agency, “We are investigating a suspicious package,” but gave few other details.
The size of the package is not known, nor when or how it arrived, or what it contains.
An eyewitness quoted by the news agency said there were four plastic yellow postal crates in the area that is roped off.
European nations have been operating at a heightened alert since last month when governments across the continent received a series of threats and terror alerts.
On November 13, France endured one of the worst terrorist attacks to strike the country since World War II, leaving 130 dead and hundreds more injured.
The multi-site attacks were carried out nearly simultaneously by members of the radical Islamist Da’esh (ISIS) terrorist organization.
The group has since issued numerous threats against other governments in Europe, as well as those of the United States and Israel as well.
Last month, Da’esh terror chief Abu Bakr al-Baghdadi warned in a new audio threat that his terrorist army is “getting closer every day” to striking Israel. However, the authenticity of the tape could not be confirmed.
Like Hezbollah terror chief Hassan Nasrallah, who has been forced to remain in hiding since the 2006 Second Lebanon War with Israel, it is likely that al-Baghdadi is also moving from place to place in hopes of keeping his body and soul together.
Numerous Da’esh commanders and field officers have been eliminated over the past weeks due to intensive bombing by Russian and U.S.-led coalition forces.