The so-called Syrian Observatory for Human Rights (SOHR) reported Sunday the recapture of Masharah, which lies about 11 kilometers from the occupied Golan.
"Around 800 missiles and shells have been fired against several areas in the province and fierce fighting continues on the ground," SOHR head Rami Abdel Rahman said, Press TV reported.
The monitoring group further reported the shelling of terrorist targets in the town of al-Haara in Quneitra's neighboring Dara'a Province.
Since June 19, the Syrian army has been conducting a major counter-terrorism operation in Dara'a, which also borders Jordan and the Golan Heights.
On July 12, Syria's al-Watan newspaper said that the army had deployed reinforcements to Quneitra to launch a “broad military operation” and wrest control of the province.
The full liberation of both Dara'a and Quneitra by Syrian government forces would cut the much-reported collaboration between Israel and anti-Damascus militants operating in the two regions.
In recent days, Dara'a militants have been handing over their heavy weapons to Syrian government forces and leaving the region in negotiated surrender deals mediated by Russia.
According to the SOHR, pro-Damascus forces are now holding more than 80 percent of Dara'a Province.
Israel has been on high alert in recent days as Syrian government forces advance against foreign-backed terrorists near the Golan Heights.
Tel Aviv has frequently attacked military targets inside Syria in an attempt to prop up terrorist groups that have been suffering defeats at the hands of Syrian government forces.
The Israeli regime has also been providing weapons to anti-Damascus militants as well as medical treatment to Takfiri elements wounded in Syria.