German police officers check vehicles at the border between Germany and Belgium near Aachen, Germany, March 23, 2016. (Xinhua/Gong Bing)

BERLIN, July 28 (Xinhua) -- Individuals suspected of plotting terrorist attacks in Germany can be forcibly deported in a "fast track" process, a ruling by the Federal Constitutional Court in Karlsruhe found on Thursday.

A corresponding provision in German residence law did not contradict the country's constitution, a statement published by the court read. The Federal Constitutional Court is the highest judicial authority in Germany.

The ruling enables interior ministries across the country's 16 states to deport non-German citizens more rapidly if they are seen to constitute a "special threat to the security of the German Federal Republic or a terrorist threat."

The judges have thus confirmed the constitutionality of legislation first introduced by German lawmakers following the terrorist attacks on Sept. 11, 2001 in the United States.

The measures were only fully enforced after an Islamic extremist drove a truck into a crowded Christmas market in Berlin on Dec. 19, 2016, killing 12.

During related police raids in Goettingen, Lower Saxony, an Algerian and Nigerian extremist were taken into custody and subsequently deported to their home countries because they were allegedly planning terrorist attacks.

Although the plans were not concrete enough to instigate formal criminal proceedings, the Federal Administrative Court confirmed the deportations.

The Federal Constitutional Court has now assessed the law's constitutionality for the first time on the occasion of a separate incident in the city-state of Bremen.

The case at hand concerned an Algerian citizen who first travelled to Germany in 2003. Authorities in Bremen classified the man as a terror suspect in 2017 and ordered his deportation to Algeria. The appeal to the Federal Constitutional Court which was launched in response by the individual was unsuccessful.