Attorney General Eric Schneiderman subpoenaed the company on Wednesday evening, demanding extensive financial records, emails and other documents, a source familiar with the investigation said on Thursday. Exxon on Thursday confirmed it had received the subpoena, and that it was assessing its response, adding that has been including information about the business risk of climate change for many years in its quarterly filings, corporate citizenship report and in other reports to shareholders, Exxon spokesman Richard Keil said.