The nephew of a Chinese bishop who was arrested 23 years ago has said he does not know where his uncle is incarcerated, or even whether he is still alive.

“His whereabouts are unknown and I don’t even know if he is alive or not. I am upset with tears every time I think of this 87-year-old man. Please pray for him,” Su Tianyou told UCANews recently.

His uncle is Bishop James Su Zhimin of Baoding, in China’s Hebei province, southwest of Beijing.

In 1996, the bishop was arrested during a procession, and charged with conducting “unregistered” religious activities: Su had refused to join the Chinese Catholic Patriotic Association, the government recognized Catholic Church in China, and was instead a member of the “underground” Church- in communion with Rome, and appointed a bishop by Pope St. John Paul II, but unrecognized by the Chinese government as a bishop.