EU antitrust regulators to warn Siemens, Alstom about rail merger - source

BRUSSELS, Oct 23 (Reuters) - EU antitrust regulators will warn Siemens and Alstom this week that their plan to create a Franco-German rail champion will hurt competition, a person familiar with the matter said on Tuesday.

The European Commission, which opened a full-scale investigation into the deal in July, will send a statement of objections or charge sheet setting out its concerns about specific areas, the person said, though it is possible the timetable for doing so could slip to next week.

The EU competition enforcer had previously flagged worries about reduced competition in the supply of some types of trains and signaling systems as a result of the companies' plan to merge their rail operations. (Reporting by Foo Yun Chee; Editing by Adrian Croft)