FIGHTING STEPS UP IN NORTHWEST BOSNIA

ZAGREB, April 13 (Hina) - Fierce fighting was raging near Mala Kladusa in the Bihac enclave of northwestern Bosnia, UN spokesman Christopher Gunnes told reporters in Zagreb today. UN military observers have reported 700 shell impacts and 1,700 bursts of small arms fire since 6 a.m. today, Gunnes stressed. He was unable to say who had started the attack. Colonel Walt Natynczyk said busses with troops had been seen crossing from Serb-occupied parts of Croatia into the Bihac pocket. But he could not specify whether those were renegade Moslem troops or rebel Croatian Serb forces. Natynczyk said there had been no shift in the confrontation line in the Mala Kladusa area. (hina) mm vm 131554 MET apr 95