There are no political prisoners in Egypt and all suspects are detained in accordance with the criminal law, Prosecutor General Hisham Barakat claimed on Thursday.
Speaking at a forum in Vienna on cross-border organised crime, he also asserted that the rights of detainees in Egypt were respected.
Barakat's comments come amid US state department calls for the Egyptian government to stop what it described as politically motivated arrests and detentions.
"We have been continually calling for an end to the politically motivated arrests and detentions and we will continue to do this," the state department said via its Arabic-language Twitter account "USABilAraby" earlier on Thursday. It also said violence was hindering Egypt's political and economic progress.