The militant group said it will try to shortly put back into operation the Islam Qala border crossing in Herat province.
An Afghan government official said efforts are underway to recapture the border crossing.
Islam Qala is the second key border crossing the Taliban have captured since they launched a sweeping offensive in early May.
Brigadier General Farhad Arianfar, deputy chief of the Iranian Army Ground Force’s Operations, said Friday full security is preserved at Iran’s eastern borders.
“With the clever presence and efforts of the Iranian Ground Force in hundreds of kilometers along the eastern borders, as well as the efforts of zealous border guards in the border areas with Sistan and Baluchestan Province and coordination with the dear forces of the IRGC, we closely monitor the slightest movements near the borders and will not allow the slightest illegal motion through these borders,” he said.
General Arianfar made the remarks during a visit to Iran’s eastern borders.
“The southeastern and eastern borders of the country are under 24-hour surveillance and are fully secure,” he added.
Over the last week, the Taliban have overrun areas bordering five countries – Iran, Tajikistan, Turkmenistan, China and Pakistan – amid the United States’ withdrawal of its forces from the country to end its 20-year military intervention.
According to Russia, the Taliban currently control more than two-thirds of the border between Afghanistan and Tajikistan. Moscow has urged all sides of the conflict to show restraint.