U.s.-based el-sissi critic says his brother detained

The U.s.-based Egyptian activist whose Facebook page helped ignite the 2011 pro-democracy uprising said authorities have arrested his brother in Cairo.

Wael Ghonim, a computer engineer, said his recent criticism of Egyptian President Abdel-fattah el-sissi prompted authorities to retaliate by detaining his brother.

Meanwhile, dozens of people on Friday held a rare protest in Cairo during which they called on el-sissi to quit. Security forces dispersed the protesters, and no casualties were reported.