It was held on April 5, 1986, in La Belle, a nightclub preferred by American soldiers at the time, in the Friedenau region of Berlin, Germany. The attack took place with the detonation of bombs placed under the stage. In the attack, two American soldiers and a Turkish soldier lost their lives, while approximately 230 people were injured. Among the injured were 79 American soldiers. Although Gaddafi, who is known to have connections with the Libyan administration and terrorist organizations, was held responsible for this attack, this relationship could not be proven for a long time. Ten days after the attack, then President Ronald Reagan in the USA launched air strikes on Libya, claiming that there was irrefutable evidence that the Libyan government was responsible for the attack. In 2001, the German court declared that the Libyan government was responsible for the attack, and the 4 people involved were prosecuted. Libya-Germany relations, on the other hand, gained a normalization course with Gaddafi's payment of 24 million Euros to those injured in the attack (excluding American soldiers).
Sources: Deutsch Welle - Berlin's La Belle nightclub bombing remembered 25 years on, Glossary of Safety Terms, The Guardian - Libya agrees compensation for Berlin bombing