May 1 (Reuters) - The U.S. Federal Trade Commission is set to decide whether to sue to block Exxon Mobil's $60 billion acquisition of Pioneer Natural Resources in the coming days, Bloomberg News reported on Wednesday, citing people familiar with the matter.

The FTC had sent a second request for more information on the deal, last year. (Reporting by Sourasis Bose in Bengaluru; Editing by Shailesh Kuber)