A police captain was found dead in Dongguan’s Qiaotou Village after apparently jumping off a bridge on August 2. His colleagues at the Changping Public Security Bureau say he was under a large amount of pressure at work and his wife says his behaviour had been somewhat odd in the days before his death.

The autopsy showed no evidence that he was murdered, Nandu Daily reports.

Liu Canxin, 46, a Dongguan native who had earlier been in the armed forces, was known as a responsible and stoic cop. However, he was remarkably quiet and aloof, seldom talking with his colleagues in the canteen. This may be why none of his colleagues noticed anything unbecoming until his wife reported him missing.

He was also described as a perfectionist, which may have contributed to the stress he was feeling at work.

Liu is not the first high-ranking police officer in the Pearl River Delta to have killed himself this year. In January, Qi Xiaolin, deputy head of the Guangzhou Public Security Bureau, was found hanged in his home.