Actor George Clooney was detained Friday morning during a protest in front of the Sudanese Embassy in Washington.

On Wednesday, Clooney testified before Congress about "a campaign of murder" under way in Sudan, where villagers run for the hills to hide from bombings on a daily basis.

"What you see is a constant drip of fear," Clooney said, a day after returning from a trip in which he and a small team of fellow activists managed to enter one of the most devastated areas, the Nuba Mountains in South Kordofan.

"We found children filled with shrapnel, including a 9-year-old boy who had both of his hands blown off," Clooney told the Senate Foreign Relations Committee.

Clooney said the attacks are being orchestrated by Sudan's government, led by President Omar al-Bashir, government official Ahmad Harun and Defense Minister Abdelrahim Mohamed Hussein - the same three men, he said, who previously orchestrated long-documented attacks in Darfur.