Following the army's announcement, Prime Minister Benjamin Netanyahu said that the operation to track the tunnels "is in its beginning".
Israel is also concerned about Hezbollah obtaining precision-missiles and in September identified three locations in Lebanon where it said the group was converting "inaccurate projectiles" into precision-guided missiles - something Lebanon's government has denied.
The media relations department of Lebanese political and militant group Hezbollah has released photos showing what appear to be Israeli troops operating in the border area between Israel and Lebanon, Al-Masdar news has reported.
The tunnel is now under Israeli control and no longer presents a threat.
Lebanon's official NNA news agency said Israeli forces fired shots in the air east of the village of Mays Al-Jabal after they had been surprised because of heavy fog by a routine Lebanese army patrol. It is meant to destroy cross-border attack tunnels dug by Hezbollah that Israel believes were meant to facilitate a full-scale attack on the Galilee region.
First Alert Days: Winter Storm Warning remains in effect through noon Monday
The National Weather Service has expanded Winter Weather Advisories into the valley to include Knox, Anderson and Union Counties. A major winter storm is threatening to deliver snow, ice and flooding across much of the United States over the next few days.
Nissan GT-R50 by Italdesign: production styling confirmed
Not only that, but torque has gone up from 481 pound-feet (652 Newton-meters) to a whopping 575 lb-ft (780 Nm). To order one, Nissan are directing customers to visit the website GT-R50.nissan and Italdesign direct.
Miss Mexico Venessa Ponce De Leon wins Miss World 2018
She has been a beauty pageant contestant since she was six, and in 2014, at 15 years old, won the Miss Teen Asia USA title. But Anukreethy, a native of Tiruchirappalli, made it to the top 30, but failed to make the cut to the top 12 at the gala.
The soldiers "spotted three suspects, apparently Hezbollah activists, attempting to approach" an area where the army was carrying out engineering work in bad weather, the Israeli military said in a statement.
The United Nations peacekeeping Interim Force in Lebanon (UNIFIL) confirmed the existence of a tunnel near the "blue line" frontier between Israel and Lebanon on Thursday, describing it as a "serious occurrence".
"I told the ambassadors that they need to unequivocally condemn this aggression against us by Iran, by Hezbollah and by Hamas, and of course, to also strengthen the sanctions against these elements", Netanyahu told foreign ambassadors on a tour of the border on Thursday.
"The president of Russian Federation stressed the importance of ensuring stability in the region", the statement said.
Israel said it placed explosives inside the tunnel. The Lebanon terror organization had planned to infiltrate hundred of terrorists into northern Israeli towns and communities, and murder as many civilians as they could at the start of the impending war with Israel.