Egypt's top prosecutor issued arrest warrants for five prominent activists who oppose the Muslim Brotherhood.
A statement by the attorney general, posted on a government website, said he banned the five from leaving the country.
A day earlier, Islamist President Mohammed Morsi, described as visibly angry, shouting and pounding the table with his fists, warned anti-government activists he's weighing unspecified actions against them.
Shortly after the warrants were issued, one of the activists, Abdel-Fattah, told the Associated Press he's consulting his attorneys on how to respond.
Egyptian rights activists and the opposition warn the arrest warrants could be the start of an intimidation campaign against anyone who opposes Morsi and his government.
Khaled Dawoud, a spokesman for the National Salvation Front, said they feel threatened and expect the worst.
The opposition charges that Morsi and his Islamist government have failed to take on Egypt's most pressing problems and are simply trying to gain a monopoly on power.