Police are investigating an attack that caused extensive damage to more than 60 works of art and artifacts displayed at three locations on Berlin's Museum Island and whose motivation is a mystery. Unidentified suspects had splashed an oily liquid around the museums during opening hours on October 3, Carsten Pfohl of Berlin's criminal police told a news conference. The damaged exhibits include Egyptian sarcophagi, stone sculptures and 19th-century paintings held at the Pergamon Museum, the Neues Museum and the Alte Nationalgalerie, according to local media reports that broke the news of the attack on Tuesday night. The public had not...