Toyota Motor Corp. said Tuesday its group net profit in the April-June quarter rose 28.8 percent from a year earlier to 286.6 billion yen due to robust overseas sales and rigorous cost-reduction efforts.

The result prompted the nation's top automaker to lift its global sales forecast for the full fiscal year by 2.5 percent from May to 7.2 million units.

Revenue during the reporting quarter grew 10.2 percent to 4.51 trillion yen, while operating profit surged 31.6 percent to 448.6 billion yen.