At least six people were killed Thursday in a crackdown by Syrian security forces on a village near the Lebanese border, activists based in northern Lebanon said.
"More than 20 others have also been wounded since the operation started at Thursday dawn in the village of Tel Kalah," Omar Idlibi, a Lebanon-based Syrian activist, told dpa.
Activists in the region of Halba in northern Lebanon told dpa sounds of the heavy shelling and machine guns were being heard across the border on Thursday.
Tel Kalah, located in the restive Syrian province of Homs, is a few kilometers from Lebanon's northern border with Syria.
Thursday's crackdown is the second by the Syrian forces on Tel Kalah since an uprising against the rule of President Bashar al-Assad started in mid-March.
The violence came a day after the 57-member Organization of Islamic Cooperation called on Syria to stop the use of "excessive force" against pro-democracy protests, which has killed more than 3,500 people since March, according to the United Nations.