ISMAILIA, Egypt (Reuters) - Egypt will allow an Asian aid convoy to enter the Gaza Strip through its Rafah border but has barred Iranian activists from traveling with the convoy for security reasons, Egyptian sources said Friday.

The “Asia 1” convoy’s 120 activists from 18 different Asian countries will sail Saturday from the Syrian Al Ladhiqiyah port en route to Egypt’s Arish harbor in Arish city, 40 km (25 miles) from Egypt’s Rafah border with Gaza.

Israel has maintained a crippling blockade on Gaza since 2007, when Islamist group Hamas took control of the territory.

The convoy will be allowed to take its 300 metric tons of medical aid, including four ambulances, for Palestinians in Gaza through the Rafah border, security sources said.

Security sources said Iranians were denied access for “security and organizational reasons,” without giving details. It was not known how many Iranian activists intended to travel on the convoy.

U.S. diplomatic cables released by WikiLeaks have shown Egypt was wary of Iran’s spreading influence in the region.

One cable quoted Egypt’s spy chief Omar Suleiman as saying Iran was giving Hamas $25 million a month in funds, but that Egypt was preventing financial support entering Gaza. Iran says its support for Hamas is diplomatic only.

“Asia 1” was scheduled to reach Gaza on December 27, in time for the second anniversary of Israel’s 22-day war on the Strip in 2008. Some 1,400 Palestinians and 13 Israelis died.

Iran and Egypt severed ties in 1980 after Iran’s Islamic Revolution and Egypt’s recognition of Israel.