Hamas representative in Lebanon Ahmad Abd Al-Hadi said that it was Hizbullah chief-of-staff Imad Mughniyeh and IRGC Qods Force commander Qasem Soleimani who came up with the idea of Hamas's tunnel network in Gaza. He made these remarks in an interview, which aired on LuaLuah TV (Bahrain) on January 10, 2020. Abd Al-Hadi said that the two men had visited Gaza several times and "contributed to the defense plan."
Ahmad Abd Al-Hadi: "The idea of [digging] tunnels... Today there are 360 kilometers of tunnels in Gaza. There are more than 360 kilometers of tunnels underground. I won't go into details on this. Two people came up with the idea of digging these tunnels: The first is the martyred commander Imad Mughniyeh, and the second is Hajj Qasem Soleimani who went to Gaza more than once and contributed to the defense plan from the moment it was first drafted. I am not divulging any secret, by the way. The enemies know all this but what the enemies do not know is way more than what they do know."