AT HIS OFFICIAL RESIDENCE OF MANSHIAT EL BAKRY IN CAIRO, EGYPT'S PRESIDENT GAMEL NASSER PLAYED HOST TO CZECHOSLOVAKIAN FOREIGN MINISTER JAN MARKO ON TUESDAY (APRIL 29).

MR MARKO, WHO BECAME PRIME MINISTER STROUGAL'S FOREIGN MINISTER ON JANUARY 29TH FOLLOWING THE RADICAL CHANGES IN THE CZECHOSLOVAKIAN GOVERNMENT AND COMMUNIST PARTY LEADERSHIP, ARRIVED IN CAIRO ON APRIL 25 AT THE INVITATION OF HIS EGYPTIAN COUNTERPART MAHMOUD RIAD.

THE CZECHOSLOVAKIAN FOREIGN MINISTER AND HIS DELEGATION, WHO DID NOT MEET WITH PRESIDENT NASSER UNTIL THE LAST DAY OF THEIR FOUR-DAY VISIT, WERE IN CAIRO AT THE TIME OF ISRAELI CLAIMS -- AND COMMUNIST DENIALS -- OF SOVIET PILOTS FLYING RUSSIAN-BUILT MIGS IN MIDDLE EAST OPERATIONS.