Three simultaneous bombings hit Dahab - an Egyptian beach resort popular with foreigners Monday night, killing at least 18 people. The bombs hit the Ghazala supermarket and the Nelson and Aladdin restaurants.
Health and security officials said 12 Egyptians and six foreigners were killed, revising an earlier toll of 23. Among the victims was a German baby. Police said one Russian and one Swiss were also among the dead.
Over 60 people were injured. The Interior Ministry said the wounded included 42 Egyptians and 17 foreigners while police put the number of wounded at more than 150. French, American, British, Italian, Arab and Israeli nationals were among the injured, according to security sources. Israeli reports said three Israelis were hurt in the attack. Israeli authorities said 1,800 of their citizens were in the Sinai at the time of the blasts.
Some reports said the blasts appeared to have been the result of remote-controlled bombs, but security experts claimed they were caused by suicide bombers wearing explosives belts.
Police arrested 10 people Tuesday in relation to the triple bomb attack.
The blasts drew condemnation from world leaders. US Secretary of State Condoleezza Rice said Washington has been in contact with the Egyptian government "to extend our condolences and to offer whatever assistance they may need".
British Foreign Secretary Jack Straw described the attacks as "appalling" and added: "Once again terrorists have demonstrated their callous disregard for human life."
His Canadian counterpart Peter MacKay said, according to AFP, "Canada strongly condemns this terrorist act, and we are profoundly troubled by such events."
UN Secretary General Kofi Annan "condemns this act of terror targeting innocent people," his spokesman, Stephane Dujarric, said in a statement.
Terrorist attacks have killed nearly 100 people at several tourist resorts in the Sinai Peninsula in the past two years.