LONDON -- A second car bomb attack in less than 24 hours against Israeli and Jewish targets in London fueled fears Wednesday of an international guerrilla campaign against the Middle East peace process.


The explosion at 1 A.M. in the north London area of Finchley was outside a building housing a number of Israeli and Jewish organizations, a police spokesman said.


He said a car bomb caused the blast, which blew out windows in the three-story building but left no major damage. Hospital staff said five people had been treated for superficial injuries.


A massive car bomb explosion outside the Israeli Embassy in London on Tuesday injured 14 people and triggered fears that Islamic fundamentalists may be mounting an international guerrilla campaign to oppose the Middle East peace process.


Police said they were searching for a middle-aged woman of Mediterranean appearance who was seen leaving the parked car shortly before it exploded at midday Tuesday in the Kensington district of west London. The 20-30 kilogram bomb badly damaged the embassy and shattered windows in nearby buildings.


The attack came just 24 hours after Israel and Jordan signed an historic peace agreement in Washington ending 46 years of hostility and a week after 96 people were killed by a bomb in a Jewish community center in Buenos Aires.


Commander David Tucker, head of Scotland Yard's anti-terrorist branch, said the embassy blast had the hallmarks of an international terrorist attack.


"Given the appearance of the woman and the location of the Israeli embassy, this seems to be a return of Middle Eastern terrorism to the streets of London," he told a news conference.


Israeli Foreign Minister Shimon Peres also pointed the finger of blame at Islamic extremists bent on ruining the improved Arab-Israeli relations.


No one has admitted responsibility for the London explosions.