Khomeini Aide Killed

TEHRAN, Iran--One of Iran's top Moslem leaders, Ayatollah Morteza Motahari, a close associate of Ayatollah Ruhollah Khomeini, was assassinated as he left a dinner party in Tehran, Iranian officials said yesterday.

An anonymous caller to the newspaper Ayendegan asserted the little-known Forghan group, which last month took responsibility for the assassination of the former armed forces chief of staff of Khomeini's revolutionary regime, was responsible for yesterday's attack.

The caller said Motahari was head of the secret Islamic Revolutionary Council set up by Khomeini. Among its other duties, the council supervises the revolutionary courts which have sent 164 persons before firing squads.