Reuters reports that the Egyptian army has secured the Museum of Egyptian Antiquities, commonly known as the Egyptian Museum, in downtown Cairo. The museum, one of the world's great repositories of ancient Egyptian artifacts, is located on Tahrir Square, site of some of the most violent scenes in the current wave of protests. Earlier today in a widely tweeted story, Al-Jazeera's Arabic news source reported that protesters had formed a human chain around the building to protect it from looting. It's unclear whether the museum faces danger from fire. The nearby headquarters of the ruling National Democratic Party was reportedly burning out of control earlier in the evening.