German engineering giant Siemens AG said it is prepared to discuss a tie-up with its French rival Alstom.
Siemens said it sent the Alstom board a letter “to signal its willingness to discuss future strategic opportunities” but declined to elaborate.
The move announced on Sunday comes amid heated speculation that General Electric Co. is considering buying Alstom.
Shares in Alstom were halted on Friday after its stock closed nearly 11 per cent higher on Thursday at 27 euros.