Authorities Cite Links of Plotters To Hate Groups

The four small groups of white supremacists arrested in Southern California on Federal weapons charges on Thursday apparently did not know each other, but shared ties to two national racist and anti-Semitic organizations that hoped to start a "racial holy war," law-enforcement officials say.

The four groups were also linked, apparently, by undercover agents and informants for the Federal Bureau of Investigation who had gained their confidence during investigations that began in 1991.

Federal authorities said today that they were compelled to end the investigations because they feared imminent violence by one of the groups, the Fourth Reich Skin Heads, led by a 20-year-old Long Beach youth, Christopher D. Fisher. They said he and two juveniles were preparing this week to send a letter bomb to a rabbi in Orange County, and next month to bomb a prominent black church in Los Angeles, the First African Methodist Episcopal Church, and shoot worshipers.

Mr. Fisher, son of a professor of computer science and a university administrator, and the two juveniles who were not identified because of their ages, had loosely discussed killing a number of well-known blacks, including Rodney G. King, the rap musicians Eazy E and Public Enemy, Louis Farrakhan, local leaders of the National Association for the Advancement of Colored People and the Rev. Al Sharpton of New York. Some Threats Not Serious

But Terree A. Bowers, the United States Attorney here, said the threats against Mr. Sharpton and the rappers were not considered serious.

"With the exception of Rodney King and the A.M.E. church, the others were just really kind of mentioned as possible targets with no overt act taken to actually target them," Mr. Bowers said in an interview today.