A senior Hamas official with extensive knowledge of the terrorist organization’s network of tunnels has surrendered to Israel, Haaretz reported Tuesday, citing reports from Fatah-affiliated websites.

Bassam Mahmoud Baraka, the son of a Hamas-affiliated religious judge, is said to have turned himself in to Israeli authorities at the border fence between Gaza and Israel while carrying a laptop.

Read More: Reports: Senior Hamas Tunnel Expert Defects to Israel | The Tower