At least 20 are dead after a car bomb rips through a market in the northern Syrian town of Darkoush.
New amateur video appears to the show the aftermath of the bombing, which wounded dozens.
Locals lined up the bodies of the dead, waiting for families to identify them.
Darkoush is a small rebel-controlled town in the Idlib province near the Turkish border.
Reuters cannot independently verify the video, which was obtained from a social media website.
This latest blast comes as U.S. Secretary of State John Kerry meets with U.N. Special Representative for Syria Lakhdar Brahimi in London to continue pushing for peace.
JOHN KERRY, U.S. SECRETARY OF STATE, SAYING:
"There is no military solution in Syria and we believe it is urgent to set a date, convene the conference and work towards a new Syria."
The push for negotiations has run into opposition from the Syrian National Coalition who say any deal should require Assad to step down.
SYRIAN NATIONAL COALITION SPOKESMAN KHALED SALEH SAYING:
"Transition to democracy means that the Assad regime which is responsible for killing so many people does not, and Assad himself and those who are responsible for killing Syrians will not have a place in a future Syria."
So far, more than 115,000 have been killed in the two-and-half-year conflict.