Chinese official purged after Tiananmen Square massacre dies aged 90

Bao Tong has died aged 90 (Ng Han Guan/AP)

Bao Tong, a leading voice for political reform in the Chinese Communist Party who was purged after the 1989 Tiananmen Square massacre, has died aged 90.

Son Bao Pu said in a tweet that his father died peacefully on Wednesday morning. Mr Bao had been living in a Beijing suburb under tight police supervision.