Israel has advised its citizens to avoid travel to Turkey and instructed those already there to keep a low profile and avoid crowded downtown areas.

Protests also took place in Ankara, the capital.

Emergency UN meeting

Turkey's foreign ministry has condemned the Israeli raid, and recalled its ambassador to Israel.

It has also called for an emergency United Nations meeting over the incident, an unnamed diplomat has said.

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  Aftermath of Israel's attack on Gaza flotilla

"We are preparing to call for a meeting of the UN Security Council on the issue," the diplomat said without explaining what action Ankara would demand against Israel.

Turkey's deputy prime minister added that the nation would be cancelling three joint military exercises and recalling a youth soccer team from Israel.

Anita McNaught, Al Jazeera's correspondent in Istanbul, said relations between Israel and Turkey have deteriorated since Israel's recent war on Gaza.

"Up until that point they had ... a constructive military alliance and for many years they saw the issue of domestic terrorism as one they had to share information about.

"But since the Gaza war relations have nose-dived and it would be absolutely fair to say that this is the lowest point," she said.

International condemnation

Israeli forces stormed the so-called Freedom Flotilla, which was carrying hundreds of pro-Palestinian activists and tonnes of aid, while they were 65km off the Gaza coast in international waters.

people on board

  Two Palestinian's who are also members of Israeli parliament
  Swedish author Henning Mankell
  Nobel peace prize laureate Mairead Maguire
  Aengus Snodaigh, member of the Irish parliament
  Irish writer and historian Fintan Lane
  Three German parliamentarians

The action has brought widespread condemnation, with the EU foreign affairs chief demanding that Israeli authorities mount a "full inquiry" into the attack.

Catherine Ashton also reiterated a longstanding demand for "an immediate, sustained and unconditional opening of the crossings for the flow of humanitarian aid, commercial goods and persons to and from Gaza," a spokesman said.

France and the UN's Middle East envoy have also condemned the attack, while Greece suspended a military exercise with Israel and postponed a visit by Israel's air force chief.

There are about 700 activists on board the flotilla, included people from the United States, Britain, Australia, Greece, Canada, Malaysia, Algeria, Serbia, Belgium, Ireland, Norway, Sweden and Kuwait.

The majority of people are from Turkey.