Mystery deepens over hostages 22.11.2004 By KIM SENGUPTA and RAYMOND WHITAKER in Baghdad A Polish woman taken hostage in Iraq turned up at a news conference in Warsaw yesterday, saying she had been treated well but refusing to give any further details about her captivity or how she was freed. Teresa Borcz Khalifa, a Polish woman freed after being held hostage in Iraq since October. Picture / Reuters The release of Teresa Borcz Khalifa added to the mystery surrounding the fate of Margaret Hassan, who appears to have been executed by her captors. Yesterday, there was more confusion over whether...