UN observers have arrived at the site in Hama province where Wednesday’s massacre is reported to have taken place.
The group toured the village of Mazraat al-Qabeer where it is claimed that between 50 and 80 people, including women and children, were either shot or stabbed.
The team are due to confirm whether the atrocity in the village of about 150 people was as severe as first reported.
Syrian activist group SNN claims that government troops prevented monitors from talking to local residents.
The UN team had attempted to view the site on Thursday but turned back after being shot at.
Their original convoy had been blocked by Syrian forces and residents from nearby villages.
Monitors also visited Talbisah, near Homs, the scene of an upsurge in violence in the past week.