A member of Hamas’s “military arm,” the Ezzedine al-Qassam Brigades, has died after an underground tunnel collapsed in the Gaza Strip Tuesday.

The terrorist was identified by Hamas’s Al Aqsa TV station as 23-year-old Khaider a-Zahar.

His death was formally announced after numerous Palestinian media outlets reported that one person was missing and eight others injured after the tunnel collapsed earlier this evening.

It comes just one week after seven other Hamas terrorists were killed under similar circumstances, when the tunnel they were in collapsed as a result of heavy rainfall.

Hamas has been busily rebuilding its terror tunnel network, which was destroyed by the IDF during 2014’s Operation Protective Edge.

According to some estimates Hamas has succeeded in digging tunnels into Israeli sovereign territory, and Israeli officials have sought to play down fears from residents in southern Israel who claim to have heard Hamas diggers underneath their homes.