An Israeli naval vessel collided on Tuesday with a boat carrying pro-Palestinians activists and medical supplies that was trying to break the crippling blockade of the Gaza Strip.
Passengers on board the 20-meter (66-foot) Dignity said the Israeli patrol boat rammed their vessel, but Israel insisted the two boats collided as the Israeli navy was trying to contact its captain.
No one was injured in the collision between the patrol boat and Dignity -- operated by the Free Gaza Movement -- which was trying to take three tons of medical supplies into Gaza on day four of Israeli air strikes on the Palestinian territory.
Israeli foreign ministry spokesman Yigal Palmor told Agence France-Presse that the naval vessel tried to contact the aid boat by radio for identification and to inform it that it could not enter Gaza.
"After the boat did not answer the radio, it sharply veered and the two vessels collided, causing only light damage," Palmor said.
The Israeli spokesman accused the pro-Palestinian activists of "seeking provocation more than ever."
The Free Gaza Movement, which has ran the blockade six times since August to take humanitarian supplies into Gaza, said the vessel could still sail after the ramming.
Paul Larudee, one of the group's founders, told AFP the Dignity had been "surrounded" in international waters about 70 kilometers (45 miles) off the Israeli coast and 135 kilometers from Gaza.
"It was surrounded by 11 Israeli naval vessels," he said.
"They ordered the boat to stop, and we didn't. They began firing over our boat and into the waters next to the boat. When the boat wouldn't turn back, one of the naval vessels rammed the boat, but not enough to disable the boat."
On its website, the Free Gaza Movement said the Dignity was on a "mission of mercy" carrying three tons of medical supplies "donated by the people of Cyprus," from where it set off on Monday.
"Our people are communicating with the Israelis as to what's next," Larudee told AFP.
"We will try to dock in Egypt or in Lebanon, or all the way back to Cyprus. But there is doubt about fuel on board and whether they can make it all the way back to Cyprus as normally we refuel in Gaza."