Two Palestinians died as a result of a gas leak inside a smuggling tunnel along Gaza’s border with Egypt in the city of Rafah, medics said on Wednesday.

Medicals at Abu Yousef An-Najjar Hospital in Rafah said Muhammad Jalal Abu Sef, 45, and Riziq Al-Masri, 28, were dead when they arrived.

Thirteen others were injured as a result of the gas leak, which occurred after Israeli warplanes bombed the tunnels. It was not immediately clear if the gas leak was a direct result of the airstrikes.

Israeli warplanes launched three separate raids on the Gaza Strip on Wednesday morning. Two raids targeted the Rafah smuggling tunnels on the border with Egypt in the city of Rafah, in the southern Gaza Strip.

According to medical sources, six lightly injured Palestinians were treated at Abu Yousef An-Najjar Hospital in Rafah in direct connection with the airstrike.

Separately, Israeli helicopters launched a third strike on a group of Palestinian militants in an open area in the town of Beit Lahiya, in the northern Gaza Strip.

Israeli military sources claimed the attacks came after Palestinian military groups fired several homemade projectiles on the western Negev Desert on Tuesday. Furthermore, military sources explained that Palestinian militants have recently tried several times to target Israeli forces patrolling the border area and plant explosive devices near the border fence.