A Bahraini rights group says a daughter of a prominent Bahraini activist has been detained during an anti-government demonstration in the Gulf kingdom, roiled by months of protests and crackdowns. Nabeel Rajab, the president of the Bahrain Center for Human Rights, says Zainab al-Khawaja was detained early on Friday during the rally outside the capital Manama. She is a daughter of Bahrain's most prominent political activist, Abdulhadi al-Khawaja, who was imprisoned for life in June. A special security tribunal, set up under emergency rule, convicted him of anti-state crimes. Bahrain's Shiite majority has been campaigning for greater rights from the Sunni monarchy since February. At least 35 people have been killed since the uprising erupted.