Former Ugandan dictator Idi Amin, arrested when he tried to enter Zaire under a false name last week, boarded a private plane Thursday to return to exile in Saudi Arabia.

Amin, who is wanted by the Ugandan government for the torture and murder of an estimated 250,000 people during his eight-year rule, strode silently with his coat over his arm to board the aircraft belonging to Zaire's state mining company, Gecamines, for a flight to Senegal.Flanked by one of his sons, Amin appeared indifferent to the blaze of camera flashes from dozens journalists who had staked out the airport since early morning. Sources said he had been issued a ticket for a regularly scheduled flight from Senegal to Jeddah in Saudi Arabia, Amin's exile home since 1979.