On Twitter, the InterContinental Hotel pleaded for help as "thugs" stormed the building.
THUGS HAVE ENTERED THE IC SEMIRAMIS ON THE CORNICHE!— InterContinental (@ICSEMIRAMIS) January 29, 2013
Eventually, their pleading worked and it seems that special forces arrived to save them.
Special forces are on scene and handling the situation. Thank you to everyone for your help and speedy response to our SOS!— InterContinental (@ICSEMIRAMIS) January 29, 2013
But how long will they stay safe? On his Facebook page, Egypt's armed forces chief General Abdul Fattah al-Sisi warned that the current crisis could "could lead to a collapse of the state", the BBC reported.
To read more about the role social media has played in the uprising and changes in Egypt, click here.