A man jumped to his death after exploding a homemade bomb in an office building in Kunming, Yunnan province, in an attempt to kill his boss on Jan 22 over a suspected labor dispute.

According to a report on kunming.cn, the employer was unhurt but the explosion which injured another person in the office.

The report said Yang Liming, 48, who made the bomb using gunpowder from fireworks, jumped from a window in the fifth-floor office. He was found dead when doctors arrived at the scene.

Yang's colleagues said he had been in dispute with his boss over pay, but declined to give more details.