Egypt's prosecution decided on Monday to release 66 offenders who were detained in light of the American embassy clashes that started last week.
The offenders denied all charges against them, including torching police vehicles, attacking security forces and the United States embassy in Cairo and stirring disturbance.
A source from the interior ministry said on Monday morning that Egypt's security apparatus arrested 431 individuals since violent confrontations broke out near the American embassy in Cairo.
The number includes 143 people who were jailed pending prosecution, 68 with criminal records and 33 fugitives, a local newspaper said on Monday.
Clashes erupted outside the United States embassy on Tuesday after hundreds of angry protesters staged a demonstration over a film offending Islamic Prophet Mohammad that was produced in California.