John Kerry said the US's relationship with Egypt is "very important" as he visited the country for the first time since former president Mohamed Morsi was ousted.
The US Secretary of State said he had discussed with Egypt's foreign minister the need to end violence and have a constitution that "protects the interests of all all Egyptians".
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At least one person has died in the crash after the plane came down in the city of Riverside shortly after take off.
The animal is believed to have been attacked with metal bars, knives and rocks and later died of his injuries.
More than 20,000 allegations of abuse by care home workers have been made in the last three years, figures show.