Nepali police have arrested the human rights campaigner who said he would lead the first demonstration against King Gyanendra, who seized dictatorial powers last week. Witnesses say policemen in plainclothes took away Krishna Pahadi who had planned a rally Thursday to trigger a nationwide campaign against the king's move to dismiss the government and declare emergency. Mr. Pahadi had told Reuters news agency before he was taken away that the rally will go ahead even if he is arrested. Meanwhile, in a first legal challenge to the king, a Supreme Court Judge has ordered the new government to explain the arrest of a former bar association chief. The new government says it has arrested 43 people, but the opposition says the number is close to 1,000.