The US on Monday condemned the attack against a tourist bus in Egypt's Sinai Region that killed a local driver and two South Korean tourists. Twenty-four others were wounded when a bomb exploded on the bus as it was making its way to Israel on Sunday. "We extend our deepest condolences to the families of the Republic of Korea citizens killed and injured in yesterday's terror attack in Egypt," said State Department Spokesperson Jen Psaki in a statement. "We condemn this cowardly attack on innocent tourists. Our thoughts and prayers are with the victims and their loved ones." Egyptian authorities have called the blast a "terrorist act."