An elderly man in Hong Kong is believed to have killed his ex-wife before hanging himself at a public housing estate, as he reportedly felt “hopeless” after their separation following years of marital conflict worsened by their son’s suicide, police have revealed. Sau Mau Ping Assistant District Commander of Crime Terry Wan King-hang said on Thursday that the force believed the 77-year-old man killed his 71-year-old ex-wife in a Po Tat Estate flat before taking his own life on Wednesday. Police.