"The militants were coming out of a smuggling tunnel in Rafah border city and ran back when the Egyptian guards approached, leaving behind seven boxes of bombs, ammunition and live bullets," the source said, noting that they are believed to be members of the Palestinian Islamic Hamas movement.
A few hours ago, a group of gunmen bombed a pipeline in North Sinai that provides natural gas to Jordan.
The attack came after the Egyptian army ousted President Mohamed Morsi on Wednesday in response to millions of protesters who demanded his removal due to his "maladministration" since he came to power a year ago. However, supporters of the Islamist- oriented president condemned the move as "a military coup" and vowed to sacrifice for Morsi's legitimacy.
On Friday, at least five soldiers were killed in North Sinai in armed attacks by extremist Islamist groups in Arish International Airport, a security camp in Rafah, a police station and two security checkpoints in Sheikh Zuwaid and other security premises.