At least four students were killed in Syria on Thursday when security forces stormed a university after anti-government protests on the campus, a London-based Syrian opposition group said dpa reported
Twenty-eight students were wounded and around 200 arrested in the crackdown in the university in northern city of Aleppo, the Syrian Observatory for Human Rights said in a statement.
Opposition activists meanwhile denied a report by state media of an attack by "terrorists" in which the son of Ali Haidar, the head of the Syrian National Social Party was killed.
He and a friend were killed by security forces near the restive province of Homs after they took part in anti-government demonstrations, the activists said.
Information Minister Adnan Mahmoud, speaking on state television, on Thursday accused opposition rebels of committing 1,930 violations, including alleged killings and kidnappings since a United Nations-brokered ceasefire went into effect on April 12.