Toyota Motor Corp. said it is investigating after China said some of its models were made with broken or malfunctioning parts that caused accidents.

The Aug. 29 statement from the General Administration of Quality Supervision, Inspection and Quarantine said malfunctioning brakes and broken drive shafts led to accidents that "caused many casualties" in the first half of the year.

The agency didn't seek a recall and didn't give details about the accidents it was referring to.