German court jails four men in al Qaeda cell for planning attack By Matthias Inverardi DUESSELDORF Germany (Reuters) - A German court convicted four men on Thursday of being members of or supporting al Qaeda and planning a potentially lethal attack on German soil, handing them jail sentences of up to nine years. The group, dubbed the "Duesseldorf cell" by German media, was arrested in 2011 in the western cities of Duesseldorf and Bochum, days before Osama bin Laden was killed. During a two-year long trial, prosecutors said the men, acting under direct orders from al Qaeda, planned to detonate a cluster bomb in a crowd of people followed by a second explosion once emergency services had arrived to treat the victims. Moroccan Abdeladim El-K, in his 30s, was the leader of the cell and is the highest-ranking member of al Qaeda to go on trial in Germany. The court in Duesseldorf sentenced him to nine years in prison. In her ruling, judge Barbara Havliza cited a letter to Bin Laden from senior al Qaeda figure Younis al-Mauretani, since captured in Pakistan, which mentioned the German cell. The letter, found at the house where bin Laden was killed, described El K as an "intelligent and sensible brother" who had received "instructions." Prosecutors said he traveled to an al Qaeda training camp in the Afghanistan-Pakistan border area in 2010 where he was taught how to make explosives and use guns. Back in Germany, he recruited the other three suspects - German Halil S., German-Iranian Amid C. and German-Moroccan Jamil S. They were handed prison sentences of between 4-1/2 and seven years. The men are all in their 20s and 30s. Prosecutors said the group had bought a large number of barbecue lighters which can contain a chemical that is used in making bombs. However, they had not chosen a concrete target for their attack. German media have reported that the tipoff about the Duesseldorf cell came from U.S. secret services. Germany has been spared an attack on the scale of those in Madrid in 2004 and London in 2005, which together killed 243 people, but sees itself as a potential target due partly to its involvement in Afghanistan and has unearthed several plots. Writing by Madeline Chambers; Editing by Noah Barkin