JERUSALEM, NOV. 6 -- Two Arabs were shot to death in the West Bank this morning, apparently by an Israeli civilian, following the assassination in New York of radical Jewish leader Rabbi Meir Kahane, and Kahane's followers here threatened more retaliatory attacks.

The Palestians, a man, 65, and a woman, 60, were shot on a roadside in Lubban Sharqiya, a village near Nablus, by a man in civilian clothes who drove a car with Israeli license plates, Arab reports said. They said the man fired an Uzi submachine gun and appeared to have driven from a nearby Jewish settlement.

Israeli army and police commanders said they were searching for the assailant and had deployed reinforcements around the country to head off further attacks. Government leaders appealed for restraint while expressing concern that the assassination of Kahane, allegedly by a man identified by police as an Egyptian-born naturalized American citizen, could further inflame a recent wave of Jewish-Palestinian violence.

Avi Pazner, a senior aide to Prime Minister Yitzhak Shamir, said the government was "deeply shocked by this murder," adding that "even those, and they are a great majority in Israel, who do not agree with the political views of the late Rabbi Kahane deplore and condemn this further act of Arab terrorism." Pazner said that "Israel will do its utmost to prevent an outbreak of violence after this murder."

In Jerusalem, supporters of Kahane's Kach movement vowed to avenge his death and continue fighting for his radical platform, which includes expulsion of Arabs from Israel and the occupied territories. "Whoever thinks that Kahane and the Kach movement have been destroyed has made a great mistake," said a statement read by a spokesman.

Israeli radio quoted a Kach official as suggesting that the shooting of the two Palestinians was in revenge for Kahane's death. It said the spokesman added that "more Arabs would be made to pay the price." In a broadcast interview, Kach spokesman Noam Federman said, "I don't think I have any control about what Kach activists are going to do. . . . I think it might happen that Kach activists will {take} revenge."

The Kach statement blamed Kahane's death on Israel's parliament, the Knesset, as well as on the court system and the news media. Reporters who waited outside the group's headquarters this morning were sprayed with tear gas by Kach members.

Kahane served in the Knesset from 1984 to 1988, but was banned from running for reelection after a court ruled that his party violated a 1985 law banning racist platforms.

Israeli radio reported this afternoon that security officials were concerned that Kach militants might attempt retaliatory attacks on leftist or Arab members of the Knesset. Two Arab members of the Knesset were reported to have left Jerusalem for security reasons.

As it does following the death of any former member, the Knesset observed a moment of silence in honor of Kahane this afternoon, but only 20 of the 120 members participated. Politicians across the political spectrum, including Arab members of the Knesset, condemned the assassination, but some said that Kahane had been destroyed by passions he helped to incite.

Palestinian leaders in the occupied territories echoed this view. "He who lives by the sword, dies by the sword," said Saed Kanan, an activist from Nablus. Faisal Husseini, the most prominent Palestinian leader in Jerusalem, said the Israeli army had an obligation to protect Arabs from revenge attacks and added that today's killings "raised concerns about the security of our people."

Senior government officials said privately that they were deeply concerned about the possibility that Kahane's burial, expected to take place in Jerusalem Wednesday, might lead to riots. Kach militants were accused by security sources of helping to provoke anti-Arab rioting by Jewish crowds in Jerusalem twice in the last three months.

Israel has been afflicted with spasmodic outbursts of Jewish-Arab violence since the Temple Mount riots of Oct. 8, in which 17 Arabs were killed in clashes with police. Three Israeli Jews have been killed and more than a half-dozen others injured in stabbing attacks by Arabs. At least three Palestinians had been killed in retaliation before today's events.

The last two weeks have also seen an escalation of clashes between the army and Palestinians in the occupied territories.

{Kahane's father-in-law, Rabbi Jacob Blum, reportly in his 70s, died Tuesday after a long illness, Israeli radio said, according to the Associated Press. He had been in a coma for several days and was not aware of the assassination, it said.}