(Corrects charge to subversion, not inciting subversion)
* Prominent lawyer being tried for subversion
* Wang Quanzhang went missing in August 2015
* Lawyer took on sensitive cases, represented Falun Gong followers
* Tight security around courthouse for closed trial
* Wang's wife unable to travel to Tianjin for trial
By Christian Shepherd
TIANJIN, China, Dec 26 (Reuters) - Chinese police locked down a courthouse on Wednesday at the start of the trial of a prominent rights lawyer who is accused of subversion of state power and whose case has attracted widespread concern in Western capitals.
Wang Quanzhang, who took on sensitive cases of complaints of police torture and defended practitioners of the banned Falun Gong spiritual movement, went missing in August 2015 during a sweeping crackdown on rights activists.
Most cases from that summer, known as the 709 cases for the first day of detentions on July 9, 2015, have concluded. Wang, however, was incommunicado for more than 1,000 days.
An investigation said he had "for a long time been influenced by infiltrating anti-China forces" and had been trained by overseas groups and accepted their funding, according to a copy of the indictment seen by Reuters.
Police outside the court in the northern city of Tianjin told reporters they could not get near the building because it was a closed trial.
One supporter stood outside the courthouse shouting "Wang Quanzhang is a good person" and "I support Wang Quanzhang" before police forced him into a car and drove him away.
There were also several Western diplomats outside the courthouse, who were likewise not allowed in.
The indictment says Wang worked with Peter Dahlin, a Swedish rights worker who was detained in China for three weeks before being deported in 2016, and others to "train hostile forces", as well as actively providing investigative reports overseas.
It also says Wang had hyped up and distorted the facts in his online statements about the case of a policeman who killed a petitioner in Heilongjiang in 2014 and of "cults" that he had defended.
Dahlin, now in Madrid, said on Twitter they had kept all documentation dating back to 2009 "and will release anything needed to dispel that it constitutes subverting state power".
Calls to the court seeking comment went unanswered. The trial could last just a single day, although a verdict may not come immediately.
Wang's wife, Li Wenzu, says she has been unable to visit her husband since he went missing. She said seven lawyers she appointed to try to represent Wang had also been unable to visit him.
Li said in a statement sent to Reuters state security agents had followed her when she left her Beijing home and blocked off the six entrances to her compound.
She decided she would be unable to go to Tianjin after more than an hour spent trying to leave, she said.
It was not possible to reach the State Security Ministry for comment because it has no website or publicly available telephone number.
Chinese President Xi Jinping has strengthened efforts to quash dissent since coming to power six years ago, with hundreds of rights lawyers and activists detained and dozens jailed.
China routinely rejects foreign criticism of its human rights record, saying all Chinese are treated equally in accordance with the law and that foreign countries have no right to interfere. (Reporting by Christian Shepherd Writing by Ben Blanchard Editing by Paul Tait)
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