The Islamic Jihad militant group says one of its tunnels in Gaza has collapsed, killing a militant who was inside.

The Palestinian group's website on Sunday identified the militant as 28-year-old Ibrahim al-Masri. It provided no further details.

Palestinian fighters, especially those affiliated with Gaza's Hamas rulers, store weapons underground and have used tunnels to carry out attacks inside Israel.

Since the beginning of this year, 14 members of Hamas have been killed in tunnel collapses due to flooding or cave-ins that have also been referred to as work accidents.

During the 2014 war, Israeli troops destroyed more than 30 tunnels dug by Hamas. Hamas has since boasted that it has rebuilt the network.