Four Gazan terrorists have been found dead in a smuggling and terror tunnel linking the Gaza Strip to Egypt’s Sinai Peninsula, local officials said Sunday, accusing the Egyptian military of flooding it.

The four terrorists aged 22 to 45 “were found dead after the tunnel they were working in was flooded nine days ago by the Egyptian army,” local authorities in the Gazan city of Rafah near Egypt’s border said in a statement.

Egypt had not confirmed the information, though it has destroyed hundreds of tunnels in the area. The tunnels are used to transport arms and terrorists.

The border between Egypt and Gaza has also remained largely closed since the 2013 overthrow of Egyptian Islamist president Mohammed Morsi.

While the tunnels into Egypt have been used mainly for smuggling -weapons and terrorists included-, Gazan tunnels into Israel have been used for terror attacks, particularly in the 2014 operation.

Gazans alleged Egypt has carried out work to flood the area along its border to destroy tunnels into the Sinai, where Egyptian security forces are also fighting ISIS-linked terrorists.

In recent months, at least 20 Gazan terrorists have died in both terror and smuggling tunnels in the strip. A number of terror tunnels have collapsed in recent months.