5‐YEAR WAR ENDS
Cambodian Communists set up hq in Phnom Penh few hrs after surrender and invite all mins and gens of former govt 'who have not run away' to meet and help formulate measures to restore order, broadcast monitored in Bangkok; no fighting reptd countrywide; AFP dispatch from Phnom Penh repts Communist patrols with loudspeakers were moving through streets warning residents, regardless of nationality, to evacuate; AP dispatch 8 hrs after surrender notes city is quiet; Army vehicles with loudspeakers reptdly toured city 1 hr before formal surrender, instructing residents to display white flags; Premier Long Boret reptdly went to Govt hq with Information Min Thong Lim Huong to broadcast message; message was not heard; fate of Long Boret is uncertain; mil sources in Bangkok say he flew by helicopter from capital to Kompong Chhnang; rumors indicate he then went to Thailand with Lt Gen Saksut Sakhan; scene described as Communist troops entered city; freelance Amer phogographer Al Rockoff reptdly was seen aboard jeep loaded with Communist soldiers; radio broadcast announces that talks between members of surrendered mil command and Communist leaders were beginning; broadcast is interrupted by Communist spokesman who says capital had been taken by force; adds 'we did not come here to talk'; radio announcemnnt says Gen Chhim Chhuon, Brig Gen Lon Non and chief monks of 2 Buddhist sects 'have come to meet with us', Gen Sisowath Sirik Matak reptdly took refuge at Hotel Le Phnom along with several other generals and Op Kin Ang, vp of Gen Matak's Republican party; Gen Hem Ket Dara says he is taking command of Phnom Penh; map (L)