GAZA, June 28 (Xinhua) -- The Hamas interior ministry on Thursday aired recorded confessions for what it called veteran informers and collaborators of Israel in the Gaza Strip.

The video, produced by the Hamas internal security, showed several agents with shadowed faces, who admitted help Israel acquire information that led to the death of senior leaders of the Islamic movement and other armed groups.

With the help of the information, Israel killed Abdul-Aziz al- Rantisi, a Hamas leader, by airstrike in 2005, and Said Siam, former Hamas interior minister, died in Israeli bombing during the 2008-2009 Gaza operation.

The collaborators included former members of the Palestinian militant groups and a former Palestinian National Authority (PNA) security officer who had been working in Gaza before the Hamas took over the coastal enclave in 2007.

Hamas said its security apparatuses are engaged in "a battle of brains" with Israel's intelligence services.

An unnamed official from the PNA, which has been confined to the West Bank since 2007, said that what Hamas had released "doesn 't worth a reaction," referring to the Islamic movement's accusations that the PNA security services offered information to Israel on the militant groups.