On June 2, Sudanese security forces reportedly attacked medical personnel participating in a peaceful protest march through Khartoum, organized by students of the School of Medicine of Khartoum University. Reuters news service reported that doctors, while peacefully protesting the arrests of Dr Walaa Alden Ibrahim and Dr Alhadi Bakhiet, were beaten by security officials armed with sticks.Dr Ibrahim and Dr Bakhiet were arrested on June 1, then re-arrested following public statements made by the doctors, detailing the conditions of their arrests and alleging torture at the National Intelligence and Security Services head offices in Khartoum.The June 2 demonstration was disrupted by the arrival of security officials, who reportedly beat and arrested many of the medical personnel participating, and prevented doctors from the Khartoum Teaching Hospital from joining the demonstration. The African Center for Justice and Peace Studies has reported that six medical students were charged under Article 77 of the Sudanese Criminal Code 1991, banning "public noisiness" – in contravention of freedom of expression, guaranteed under Article 39(1) of the Sudan Interim National Constitution.As a membership organization of health professionals, Physicians for Human Rights calls for the release of the detained doctors, and condemns the torture and arrest of medical students involved in the organization of the peaceful protest.