Downfall of Murdoch's heir apparent James Murdoch, the presumed heir to father Rupert's media empire, resigned from News International on Wednesday. James Murdoch resigns as executive chairman of News International Once thought to be successor to father Rupert Murdoch's international media empire Murdoch, 38, dropped out of Harvard to start a hip-hop record label (CNN) -- James Murdoch has resigned as executive chairman of UK publishing company News International as scandals related to alleged phone hacking and police bribery continued to swirl around several of the company's tabloid newspapers. Before the hacking scandal, James Murdoch was widely regarded by media watchers as the heir apparent to his father Rupert's powerful empire -- a remarkable turnaround for a college dropout once viewed as the family's black sheep. As its deputy chief operating officer and head of international operations, Murdoch, 38, was the third most senior figure at News Corp., wielding considerable influence through the stable of newspaper titles at his command. Murdoch finally succumbed to the turmoil that threatens to engulf the entire company, even after it stepped away from a controversial bid to acquire full control of its UK-based broadcasting arm, ending for now any possibility of him succeeding his father at the helm of one of the most powerful media empires in the world. James Murdoch's close links to the papers at the heart of the phone-hacking scandal were pivotal. It was James Murdoch who announced the closure of the News of the World amid public fury about the paper's tactics. He always denied being aware of the phone-hacking activities -- although he did authorize payments to appease victims. In evidence to an UK parliamentary hearing last July, James Murdoch said he could not recall seeing a key document known as the "for Neville" e-mail. It implied that the practice was being conducted by more than one journalist, but this statement was directly contradicted by two of the company's senior employees and may be the focus of fresh questioning. It was another intriguing chapter in a varied career to date. James Murdoch, the third child from his father's second marriage, once appeared to be the least likely of the media tycoon's offspring to succeed, despite his evident intelligence. Born in London, but raised in New York, James Murdoch went on to attend Harvard University, where he studied film and animation before dropping out in the mid-1990s to help launch a hip-hop music label, Rawkus Records. It wasn't long before Murdoch was brought into the family business. Rawkus was eventually bought by News Corp. and in 1996 Murdoch was persuaded to take over the company's nascent internet operations, with mixed results. By 2000 Murdoch was in charge of News Corp's Asian satellite business, Star TV, where he appeared to find his feet. In 2003 he took over its UK-based sister operation, Sky, quickly dispelling doubts about his business acumen by meeting ambitious profit targets. Murdoch continued to rise through the ranks, taking on his News Corp executive roles in 2007. At the time, Rupert Murdoch described his son as a "talented and proven executive with a rare blend of international perspective and deep hands-on experience." His new position handed him overall control of News International, an umbrella company that includes the Sun newspaper, the Times and the defunct News of the World -- the paper whose activities triggered the current UK media crisis. Although regularly cited as one of the most influential figures in Britain, Murdoch's political allegiances have never been clear. A 2007 profile in the Observer newspaper says Murdoch has been "unimpressed" by then opposition leader David Cameron. The Telegraph, meanwhile, described him as a "close confidant" of Cameron. Murdoch himself told the Financial Times in 2007: "I don't comment on politics." Murdoch, who has two children with wife Kathryn Hufschmid, is said to be a black belt in karate. He is also proficient at corporate combat. In 2006 he steered BSkyB into the acquisition of a 17.9% stake in UK broadcaster ITN, blocking a rival move by Virgin Media. But it was his and News Corp.'s plans to acquire full ownership of BSkyB that put them on a collision course with British lawmakers in the wake of the phone hacking scandal, and the company eventually deciding to back down under government pressure.