Yew Kwang Ng, a 72-year-old economist at Nanyang Technological University in Singapore, is one of them.

新加坡南洋理工大学72岁的经济学家黄有光就是其中之一。

While authorities haven't been able to identify the cause of death yet, police have expanded their suspect list to include Hyon Kwang Song, the second secretary at the North Korean embassy in Malaysia, and two other North Koreans.

虽然当局尚未确认金正男的死因，警方已扩展了嫌疑人名单，包括：朝鲜驻马大使馆二等秘书玄光宋(Hyon Kwang Song)，以及另外两名朝鲜人。