A Moroccan judge has ordered a prominent writer and rights activist to be held in custody pending an investigation into money-laundering allegations, in a case that media freedom activists describe as harassment. Maati Monjib, a university historian who writes frequent newspaper editorials, has denied the accusations. His arrest at a restaurant on Tuesday followed the jailing or detention of several other dissident journalists in recent months. The prosecutor's office said in October it was investigating Monjib on suspicion of money laundering. Monjib has often denied wrongdoing in posts on his Facebook account and said he had been summoned several times…