U.S. safety regulators said on Wednesday they have opened two investigations into Chrysler Group vehicles involving possibly faulty ignition switches that can be bumped out of the "run" position, disabling airbags in the event of a crash.

The issue is similar to recalls by General Motors Co (GM) for faulty ignition switches, which have been linked to the deaths of at least 13 people.

No deaths or injuries and one crash are linked to the ignition switch issue suspected in about 1.25 million vehicles covering five Chrysler Group models involved in the new investigations by the National Highway Traffic Safety Administration, the agency said.

Chrysler Group is a unit of Fiat Chrysler Automobiles.