File picture: Reuters

Paris - Shares in French engineering and power group Alstom plunged by nearly 13.0 percent in initial trading on Tuesday in reaction to a profits warning by the company.

The price of the shares was showing a fall of 12.88 percent to 24.18 euros.

Alstom had said a short time earlier that it would take longer than expected to achieve a promised increase in its operating margins. - Sapa-AFP