Earlier in the day, Turkish howitzers on the border fired around five shots in support of allied Free Syrian Army (FSA) fighters who had entered Idlib, which is largely controlled by Hayat Tahrir al-Sham, a former al-Qaida affiliate that changed its name past year from the Nusra Front.
"Russia is supporting the operation from the air, and our armed forces from inside Turkey's borders", Erdogan added. Solid steps will be taken in the coming days following discussions between the parties this week, Ibrahim Kalin, spokesman for Turkish President Recep Tayyip Erdogan, told state-run TRT television on Thursday.
Idlib is largely held by the Hay'et Tahrir al-Sham alliance, which was not part of the talks and has rejected the implementation of a de-escalation zone.
Turkey has also pressed, so far in vain, for the United States to extradite Fethullah Gulen over the July 2016 putsch, in which more than 240 people were killed.
Activists also said around 1,500 FSA fighters reached the Turkish city of Antioch which is near the Syrian cities of Salqin and Harem in the northwestern countryside of Idlib.
The Arab country has been fighting different foreign-sponsored militant and terrorist groups since March 2011.
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She said she was devastated by the carnage and she would cooperate with authorities as they struggle to get inside Paddock's mind. Neighbor Susan Page told the newspaper Paddock and Danley were "closet people" and that she "never saw them".
Mr Erdogan said Turkish troops were not yet inside Idlib.
The Britain-based Syrian Observatory for Human Rights monitor said Turkish army cranes had begun removing sections of the security wall Turkey has built on the border in preparation for an incursion.
"We will never allow a terror corridor along our Syrian border", Erdogan said.
On its website, it said the Turkish army had fired artillery in support of the allied Syrian rebels.
Turkish military has been on the move in Turkey's Hatay province on the border with Syria.
Along with Iraq's central government, Turkey, the US, Iran, and the United Nations have spoken out against Monday's illegitimate poll, warning it would distract from the ongoing fight against ISIS and further destabilize the region. "Our position on Russian Federation as an occupier state supportive of terrorism in Syria has not changed", wrote Sejari in a tweet. Turkey, however, has backed rebels seeking Assad's ouster.
Russia, along with Iran, is the key backer of President Bashar al-Assad and Moscow's military intervention inside Syria is widely seen as tipping the balance in the conflict.