JERUSALEM -- The International Committee of the Red Cross (ICRC) is temporarily restricting its Gaza operations to the territory's main city after one of its vehicles was hit, apparently by Israeli forces, a spokeswoman said.

"We had an incident when one of our trucks traveling at the front of a convoy of 13 ambulances delivering medical assistance to south Gaza was shot at," ICRC spokeswoman Sophie Bonefield told Agence France-Presse.

Asked who attacked the truck, the said: "We very much believe it was the IDF [Israeli military]."

She said the ICRC was temporarily limiting its operations to Gaza City "while we reassess security arrangements."

The main UN agency in Gaza, UNRWA on Thursday suspended it operations in the battered Palestinian enclave after a contracted driver was killed when a truck convoy, sent to pick up humanitarian supplies in northern Gaza, was hit by tank shells.