HONG KONG—The pro-democracy group that organizes Hong Kong’s annual June 4 rally to commemorate those who died in the bloody Tiananmen Square crackdown in 1989 is being investigated by national security police on suspicion of collusion with foreign forces.
Police sent a letter to the Hong Kong Alliance in Support of Patriotic Democratic Movements in China requesting information about its membership, finances, and activities by Sept. 7, according to a copy the group sent to reporters.
