This undated file photo obtained by The Associated Press shows Bradley Manning, the U.S. Army private suspected of being the source of some of the unauthorized classified information disclosed on the WikiLeaks website.

Topeka ? Activists said Thursday they are planning a rally in June in Leavenworth to support an Army private who’s accused of leaking classified documents in the WikiLeaks scandal.

Organizers posted online that they were planning a rally on June 4 in support of Pfc. Bradley Manning, who was moved to Fort Leavenworth on Wednesday from a Marine brig in Quantico, Va.

Manning is suspected of having obtained the classified documents while serving as an Army intelligence analyst in Iraq. He is awaiting a determination by the Army on whether he’s mentally competent to stand trial.

Jim Davidson, a Lawrence activist, said organizers invited regional and national figures to the event, including Ron Paul and Ohio Democratic Rep. Dennis Kucinich. Davidson also hopes to draw representatives from anti-war and lesbian-gay community.

Davidson said Manning’s rights were being violated based on reports of his treatment in Virginia and lack of a speedy trial.

“I believe that Bradley represents a whistleblower, a person reporting on actual crimes within the government, and that as such he should have been protected, his concerns fully and transparently investigated,” Davidson said.

Messages left by The Associated Press with Manning’s attorney David Coombs for comment about the rally were not immediately returned Thursday.

Davidson said more than 100 people confirmed as of Thursday they would attend the rally, though he hoped for a larger turnout. Carpools were being assembled to bring activists from across the Midwest to the northeast Kansas city.

Manning is being held at the Joint Regional Correctional Facility at Fort Leavenworth. An Army official said Wednesday that Manning would be placed with other pre-trial inmates awaiting and receive a mental and physical evaluation. About 150 inmates are housed in the facility, adjacent to the U.S. Army Disciplinary Barracks, the military’s maximum-security prison.

No location was given for the rally, but it would likely be in a city park miles away from the Army’s prison complex on the 8-square-mile post. In March, police arrested about 35 people for blocking an intersection outside the Marine Corps base at Quantico protesting Manning’s confinement.

Manning’s transfer to Leavenworth comes a bit more than a week after a U.N. torture investigator complained that he was denied a request to make an unmonitored visit to Manning. Pentagon officials said he could meet with Manning, but it is customary to give only the detainee’s lawyer confidential visits.

An Amnesty International spokeswoman said Thursday that the human rights organization still has concerns about Manning’s treatment in military confinement.

Angela Wright said holding Manning before his trial in less-than humane conditions would constitute harsh punishment and must end.

“In our view, it’s unduly harsh,” Wright said in a telephone interview from London. “That does seem to be a more suitable location. We do believe that international concern about the case has had an influence.”

President Barack Obama and senior military officials have repeatedly contended that Manning is being held under appropriate conditions given the seriousness of the charges against him.

He is accused of leaking hundreds of thousands of documents to the anti-secrecy website WikiLeaks, including Iraq and Afghanistan war logs, confidential State Department cables and a classified military video of a 2007 Apache helicopter attack in Iraq that killed a Reuters news photographer and his driver.

David House, a friend who has visited Manning more than a dozen times in recent months, said in email to The Associated Press that he had little confidence in the military to provide adequate care for Manning. House based that on previous Pentagon statements and denial of visits by a United Nations representative and others.

“I have a very difficult time placing trust in DoD assurances that Bradley Manning will undergo better treatment at the Leavenworth confinement facility,” House said.