DAMASCUS (AFP) - Thirty-eight people were killed in clashes in two days in northwest Syria, a rights activist said on Sunday, as dissidents meeting in Brussels called for the isolation of President Bashar al-Assad. Thirty-eight people were killed in shootings in the region of Jisrash Shughur, 10 yesterday and 28 today, Rami Abdel Rahman, head of the London-based Syrian Observatory for Human Rights, told AFP. The updated toll includes six members of the Syrian security forces. Rahman earlier gave a toll of 25 19 civilians and six security agents but warned that number could rise as military and security forces continued operations in the northwest Idlib province. On Saturday, an activist in Jisrash Shughur said security forces opened fire to scatter more than 1,000 demonstrators protesting after the funeral of a civilian killed on Friday in protests at the nearby village of Has. Syrias official SANA news agency reported at the time that a member of the army was killed and a policeman injured in clashes in Jisrash Shughur. Armed groups attacked a police station and military barracks in the area and one assailant was killed, SANA said. Rights groups say more than 1,100 civilians have been killed and at least 10,000 arrested in Syria since protests erupted in March. Damascus insists that the unrest is the work of armed terrorist gangs backed by Islamists and foreign agitators. Syria has freed more than 450 political prisoners and prisoners of conscience since Tuesday as part of a general amnesty announced by Assad, rights activist Rahman told AFP on Sunday. Most of the released are Islamists or Kurds, he added. In Europe, Syrian opposition activists urged the international community to increase pressure on Assad and called for an independent investigation into his regimes deadly crackdown. The roughly 200 activists gathered in Brussels also said charges should be laid against those responsible for violations of human rights in the repression, and cases brought before the International Criminal Court. There needs to be more pressure on the regime, organisers of the Brussels meeting said in a statement. It is very important to impose diplomatic isolation on the Syrian regime, and to not allow it to be represented in international bodies, added the grouping, called the National Coalition of Support for the Syrian Revolution. The European Union and the United States have already imposed sanctions on Assad and his inner circle. The coalition dismissed as a farce Assads creation of a body tasked with creating a national dialogue. A final resolution from the Brussels meeting announced the creation of a commission to evaluate human rights violations by the regime with the purpose of laying charges and sending cases to the Intl Criminal Court.