Investigators are digging into whether an Adani entity, or people linked to the company including Gautam Adani, were involved in paying officials in India for favorable treatment on an energy project, said the people, who asked not to be identified discussing the confidential effort. The probe, which is also looking at Indian renewable energy company Azure Power Global Ltd., is being handled by the US Attorney’s Office for the Eastern District of New York and the Justice Department’s fraud unit in Washington, said people familiar with the matter.