Eman Abdul-Rahman, the lawyer for 27-year-old Mariam Ibrahim, told The Associated Press that she was released today from a police station after foreign diplomats pressed the government to free her.
Mariam Ibrahim was detained on Tuesday at Khartoum's airport while trying to leave the country with her family.
Ibrahim, whose father was Muslim but who was raised by her Christian mother, was convicted of apostasy for marrying a Christian.
Sudan's penal code forbids Muslims from converting to other religions, a crime punishable by death. A higher tribunal overturned the ruling and ordered her release.