The Israeli military says it has discovered and destroyed a tunnel burrowing from Gaza into Israel.

Spokesman Lt. Col. Peter Lerner says the tunnel is the first discovered since Israel's 2014 war with the militant Hamas movement that runs the Gaza Strip.

Lerner said on Monday troops detected the tunnel's exit, still underground, several days ago. The tunnel extended about 100 meters (325 feet) from Gaza into Israel.

He says it was lined with cement and outfitted with electricity, ventilation and rail tracks to cart away dirt from digging.

In 2014, Israel destroyed more than 30 tunnels Hamas had dug under the border. More than 2,200 Palestinians, about two-thirds of them civilians, were killed in the 50-day summer war. On the Israeli side, 66 soldiers and seven civilians were killed.