Al-Qaeda Commander Zawahiri
File Picture - Still image from video shows Al Qaeda's commander Ayman al-Zawahri speaking from an unknown location

Four suspected al-Qaeda members have been arrested in Berlin after allegedly planning a terrorist attack in Germany.

Moroccan group leader Abdeladim El-Kebir , 30, was accused of training at a terrorism camp in the Afghanistan-Pakistan border region which is entirely lawless, according to prosecutors.

El-Kebir is also suspected of recruiting and indoctrinating other members of the group who have remained anonymous due to Germany's privacy laws.

Other conspirators were Jamil S, 32, accused of helping the group to create explosive devices along with 20-year-old Amid C and Halil S, 27.

Halil allegedly attempted to continue to the terror plot after the three other men were arrested in Dusseldorf and Bochum on April 29 2011.

He was also arrested, however, later that year in December after evading police for eight months.

"According to the results of the investigation, the accused planned to conduct a spectacular terror attack in Germany," the prosecutors said in a statement. "However, they had not yet selected a specific target for the attack."

All men were German citizens and will remain in custody.