At least four people, including three Koreans, were killed Sunday after an explosion ripped through a tourist bus near a border crossing between Egypt and Israel.
South Korea's foreign ministry confirmed that a Korean tourist, two Korean tour guides and an Egyptian bus driver were killed in the explosion, while 14 tourists were wounded and are being treated at nearby hospitals.
The bus was carrying 35 people, who were waiting to cross the border to Israel after spending a night at Sinai, when an armed man -- suspected to be in his 20s -- threw a bomb at the bus.
The Korean tourist group was reportedly on a 12-day pilgrimage that included stops in Turkey, Egypt and Israel.
The Egyptian government has declared the incident a terrorist attack and is investigating the case.
Whether the attack was targeting Koreans remain unclear and no group has stepped forward to take responsibility.
Once a popular tourist destination, Sinai has been rocked by several attacks since the army ousted President Mohammed Morsi last July.
Korea's foreign ministry dispatched a delegation to Egypt on Monday morning and they will join officials from the Korean embassies in Egypt and Israel at the site of the attack.
The ministry also set up a task force and held an emergency meeting shortly after the incident was reported to come up with countermeasures.
The ministry has issued a special travel warning for Egypt, practically banning Koreans from visiting the region, and has asked Koreans travelling in Egypt and its four neighboring countries -- Israel, Jordan, Turkey and Saudi Arabia -- to return as soon as possible.
Hwang Sung-hee, Arirang News.
We're getting reports that 15 survivors of Sunday's terror attack, accompanied by a South Korean embassy staff, crossed the Egypt, Israel border into Israel about an hour ago.
We'll have more updates for you as the story develops throughout the day.