For what its worth, news releases from the Egyptian State News Agency can be found at this link:
http://www.sis.gov.eg/en/
Type "egyptair" into the search box and click the magnifying glass.
Here's the most recent one:
An equipment shipment arrived on Sunday 29/5/2016 at Cairo International Airport from several European countries to help find the two black boxes of the EgyptAir plane that crashed into the Mediterranean on May 19.
The Civil Aviation Ministry said that it is difficult to find the two black boxes before two weeks as the batteries of the two boxes cannot send or receive any signal.
A specialized ship would be sent to the crash site if the imported equipment failed to find the two black boxes.
Many MS804 news agency articles are based on this source.
