Three politicians and a union activist were charged with treason for making anti-government speeches in the southern port city of Karachi, a court official said on Thursday. The men were the first to be reported charged with treason since President Gen. Pervez Musharraf declared a state of Emergency on Saturday and suspended Pakistan's constitution. The four were arrested on Monday and were interrogated by police before being formally charged on Wednesday, said a court official who spoke on the condition of anonymity because he was not authorised to talk to the media.If convicted, the charge carries a maximum sentence of death.circumstances”.Since Emergency was imposed, hundreds of opposition workers, rights activists, lawyers and judges of superior courts have been detained.