The military crossed the border near the Turkish village of Cobanbey from Kilis Province, which lies across from the Syrian village of al Rai, according to reports, Sky News reports.
A Reuters cameraman in the area said he heard a repeated booming sound and saw plumes of smoke rising from the Syrian side of the border.
"Residents in the city have staged protests since August 27 against Turkey’s construction of a cement separation wall at the border with Kobane, the monitor and Kurdish officials said."
The tanks and military vehicles pushed for several meters into Kobane near the Turkish border, where two civilians, including a child, were killed and dozens injured on Friday when Turkish forces shot at protesters, the Syrian Observatory for Human Rights said.
Saturday’s incursion has reportedly prompted a new protest from locals.
The Turkish troops and Kobane’s people are now a short distance apart amid new fears of violence against the protesters, said the Britain-based monitoring group, which relies on a network of activists inside Syria.
Turkish President Recep Tayyip Erdogan vowed on Thursday that his country would not tolerate what he called "terror organizations" on the border to Syria.
Last week, Turkey launched its first ground offensive in northern Syria.
Ankara said its operations there are aimed at both the Islamic State (ISIS, ISIL , IS and Daesh) extremist group and the Kurdish Democratic Union Party, which it regards as the Syrian branch of Kurdish rebels (YPG) operating on its soil.
Kobane was the site of the first significant victory over ISIS when Kurdish forces, backed by US-led air power, recaptured the city from the radical group in January 2015.
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