JERUSALEM - Israeli naval commandos and warships intercepted a ship carrying weapons 100 nautical miles off its coastline overnight, a military spokeswoman said on Wednesday.
Local media reported that the vessel was carrying a shipment of several tonnes of anti-aircraft and anti-tank missiles from Iran destined for the Lebanese Hezbollah militia, but the military would not comment on the reports.
"During the night a special marine force intercepted a ship that was supposed to be carrying cargo around 100 (nautical) miles from our shore," the spokeswoman said, adding that the ship was sailing under an Antigua flag.
"We suspected it was carrying weapons and when we inspected it that turned out to be true," she said, adding that the ship has been taken to port for further investigation.
The military declined to say what kind of weapons were on board the 140-metre (462-foot) vessel or where the ship was heading.
Israel's Defence Minister Ehud Barak hailed the operation, calling it a "new success in our struggle against weapons smuggling aimed at reinforcing terrorist organisations that are threatening the security of Israel."
His remarks were carried in a defence ministry statement that said the ship was captured "near Cyprus," but did not provide further details.
Deputy defence minister Matan Vilnai, meanwhile, told military radio that the crew apparently did not know about the weapons, which were sealed in cargo containers.
Israel's Haaretz newspaper reported that the ship had set out from Iran and later docked in Yemen and Sudan before passing through the Suez Canal en route to either Syria or Lebanon.
Israel has long accused arch-foes Syria and Iran of supplying weapons to Hezbollah and to Palestinian militants in the Gaza Strip, which has been ruled by the Islamist Hamas movement since June 2007.
On Tuesday a senior Israeli general warned that Hamas had successfully test-fired a rocket out to sea, and that was capable of reaching Tel Aviv from Gaza.
The rocket, believed to be Iranian-made, has a range of about 60 kilometres (37 miles), putting Israel's major population centres in range, said Major General Amos Yadlin, head of military intelligence.
Hamas called the claim a "fabrication" designed to mobilise world opinion against the Islamist group before the UN General Assembly which was on Wednesday due to discuss a controversial report on the Gaza war.
"This is a pre-emptive step by the Zionist enemy to influence international opinion," Hamas spokesman Fawzi Barhum said, adding that the report had put Israel in a state of "crisis."
The UN report by respected South African jurist and former international war crimes prosecutor Richard Goldstone accused both Israel and Palestinian militants of committing war crimes during the December-January Gaza war.
Some 1,400 Palestinians and 13 Israelis were killed in the three-week war launched by Israel on December 27 and aimed at halting rocket attacks, which have been mostly confined to communities a few kilometres from the Gaza border.
Israel has in the past seized shipments of weapons allegedly bound for Gaza, including in May 2003, when it intercepted a ship off its northern coast loaded with bomb-making material it said was from Hezbollah.
On January 3, 2002, Israel intercepted a 50-tonne shipment of weapons destined for the Palestinians aboard the Karine A in the Red Sea.
The late Palestinian leader Yasser Arafat admitted responsibility for the smuggling attempt, and the affair seriously eroded his standing with Washington.
In May 2001, the navy intercepted the Santorini, which was packed with 40 tonnes of arms sent to Gaza by a Palestinian faction based in Syria.