(CNN) — The United States was using some of the four Iranian-Americans detained by Tehran to meddle in Iranian affairs and is trying to cover it up, Tehran’s security chief charged Saturday.

CAIRO, Egypt – A Muslim Brotherhood blogger was released Saturday after a 45-day detention, but the crackdown against the group continued, with 51 Brotherhood members arrested in recent days, police said.

CAIRO (Reuters) – Egypt has asked rival Palestinian factions for written proposals on how to stop internal fighting in the Gaza Strip, to be discussed in Cairo in July, a source close to Hamas said.