A Montgomery County jury found Clarence Leake, 30, of Centreville, Va., guilty Friday night on two counts of assault and of false imprisonment during an Oct. 21-22, 1986, takeover of the Washington Temple of The Church of Jesus Christ of Latter-day Saints.

The three men and nine women found Leake not criminally responsible on the charge of kidnapping temple worshipper Carl Olson during the 16-hour siege, and of using a handgun in the commission of a felony.

Leake, who will be sentenced Sept. 8 by Judge Peter J. Messittes, faces possible prison time on the assault and false imprisonment counts and must be sent to the Clifford T. Perkins State Hospital on the kidnapping and handgun offenses. He must be certified not dangerous to himself or the public by state psychiatrists and Messittes before he can be released from Perkins Hospital.

Leake's trial took 10 days. Jury members deliberated eight hours before reaching their verdict.

The defense had asserted Leake was not responsible for his actions in the temple because he suffered grandiose delusions, believing himself to be directed by God to enter the temple to presage the Second Coming of Jesus Christ.

The state said Leake entered the temple out of anger at being denied attendance privileges.