Israel says it found 'biggest Hamas tunnel' with 4-km long network near Gaza border

The Israeli Defence Forces on Sunday said that it has discovered a large tunnel shaft in Gaza close to what was once a busy crossing into Israel, raising new questions about how Israeli surveillance missed such conspicuous preparations by Hamas for its deadly October 7 attack. In a post on X, IDF said, "EXPOSED: The biggest Hamas terrorist tunnel discovered. This massive tunnel system branches out and spans well over four kilometers (2.5 miles). Its entrance is located only 400 meters (1,310 feet) from the Erez Crossing—used by Gazans on a daily basis to enter Israel for work and medical treatment in Israeli hospitals.  This tunnel system was a project led by Mohammad Sinwar, the brother of Hamas leader Yahya Sinwar, and the commander of Hamas’ Khan Yunis Battalion".