River cruise boats are parked on the Nile River in Cairo, Egypt September 17, 2017. The Sheraton hotel can be seen in the background. (Reuters)

Boats are pictured in front of the Grand Hyatt hotel in Cairo, Egypt September 17, 2017. (Reuters)

A Nile River boat travels in front of the Grand Hyatt hotel in Cairo, Egypt September 17, 2017. (Reuters)

People walk on Kasr El Nil bridge in Cairo, Egypt September 17, 2017. (Reuters)

Passengers dance during a Nile River cruise in Cairo, Egypt September 17, 2017. (Reuters)

Passengers dance during a Nile River cruise in Cairo, Egypt September 17, 2017. (Reuters)

Boats are pictured in front of the Grand Hyatt hotel in Cairo, Egypt September 17, 2017 (Reuters)

A Nile River boat travels in front of the Grand Hyatt hotel in Cairo, Egypt September 17, 2017. (Reuters)