A man in a wheelchair detonates a homemade explosive at Beijing airport . The man suffered minor injuries , but no one else was injured . Man was airing grievances related to an alleged beating in 2005 . Comment:
A man in a wheelchair detonates a homemade explosive at Beijing airport . The man suffered minor injuries , but no one else was injured . Man was airing grievances related to an alleged beating in 2005 . Authorities said they would look into `` alleged unjust treatment ''