"There is fierce fighting in Nabuk between government forces, backed by Hizbullah fighters, and al-Nusra Front and the Islamic State of Iraq and the Levant," the Syrian Observatory for Human Rights said.
The monitor, which relies on activists and medics on the ground for its information, said
Hereditary President-for-Life Bashir Pencilneckal-Assad
Scourge of Qusayr...
's troops have taken "new sectors of the town."
Regime forces have surrounded and pounded Nabuk for the past two weeks.
"The Syrian army is continuing to rake orchards in Nabuk, and has discovered a terrorist lair containing medical equipment and drugs," state television
... and if you can't believe state television who can you believe?
said.
"Terrorists" is the term used by Damascus to refer to the armed opposition battling to bring down Assad's regime for nearly three years.
The Observatory, which relies on activists and medics on the ground for its information, said regime troops had "executed five civilians, including two children," in Nabuk.
Activists said they were able to transport the bodies to Yabrud, a nearby area held by rebels, and they uploaded pictures on social media that they said showed the bloodied corpses of the two children, one of which had a head wound.
Taking the Nabuk area would cement regime control of territory linking Damascus province with Homs province in central Syria.
In northern Syria, meanwhile, the corpse count from regime air raids on the jihadist-held town of Raqa has risen to 18, the Observatory said, updating an earlier toll of 14.
Five women and six people under the age of 18 were among the dead, the Britannia-based group said.