Excerpted from The Associated Press:
An ailing Chinese labor activist imprisoned for two decades died in a hospital Wednesday one year after being released from jail, and a relative raised doubt on the official explanation that he had hanged himself. [...]
During his first prison term, Li was held in solitary confinement at times and beaten so badly that he had to be hospitalized, according to Human Rights in China.
For more information on Li Wangyang, see "Relatives Question Hunan Activist’s 'Suicide'; Demand Autopsy."