A report from Federal Office for the Protection of the Constitution (BfV) point out that more than 900 extremists have travelled from Germany to Middle East.
The report comes amid growing concern from German officials over domestic terrorism and on threat of increased homegrown Jihadis.
Germany’s domestic intelligence services have severally warned of increased jihadis spreading in the country.
According to BfV, 910 suspected extremists have already left Germany to travel to Iraq and Syria. This is a noticeable increase from the roughly 800 extremists reported about a year ago.
More than half of the extremists hold German citizenship, and around a fifth of them are women while some 145 of the extremists are said to have already been killed in Syria and Iraq.
The most worrying part according to the Germany intelligence service, a third of those extremists have since returned to Germany and at least 70 have been involved in attacking abroad.
Increase on Islamic Extremism
In February, the BfV, Germany's domestic security and intelligence agency, pointed out that radical Islamist scene had grown considerably in Germany, from around 100 people in 2013 to some 1,600 today.
The Intelligence service continues to warn Germany of the increased homegrown jihadis saying between two and four credible tips about planned terrorist activity in Germany each day, homegrown jihadis are involved.
Increased inline jihadis also pointed as another problem that needs immediate address.