Former BP trader sues firm, alleges market manipulation NEW YORK (Reuters) - A former trader at BP has filed a lawsuit for breach of contract in which he alleges the British company's Houston-based unit, BP Energy Co, is attempting to manipulate the U.S. natural gas liquids market. Related Stories Mexico probes if blast was attack or accident, 33 dead Hackers target Twitter, could affect 250,000 user accounts One dead, dozens hurt as police clash ... [News Source]