One of the five men arrested early Saturday in the attempt to bug the Democratic National Committee headquarters is the salaried security coordinator for President Nixon's reelection committee.
The suspect, former CIA employee James W. McCord Jr., 53, also holds a separate contract to provide security services to the Republican National Committee, GOP national chairman Bob Dole said yesterday.
Former Attorney General John N. Mitchell, head of the Committee for the Re-Election of the President, said yesterday McCord was employed to help install that committee's own security system.
In a statement issued in Los Angeles, Mitchell said McCord and the other four men arrested at Democratic headquarters Saturday "were not operating either in our behalf or with our consent" in the alleged bugging attempt.
Dole issued a similar statement, adding that "we deplore action of this kind in or out of politics." An aide to Dole said he was unsure at this time exactly what security services McCord was hired to perform by the National Committee.
Police sources said last night that they were seeking a sixth man in connection with the attempted bugging. The sources would give no other details.
Other sources close to the investigation said yesterday that there still was no explanation as to why the five suspects might have attempted to bug Democratic headquarters in the Watergate at 2600 Virginia Ave., NW, or if they were working for other individuals or organizations..
"We're baffled at this point . . . the mystery deepens," a high Democratic party source said.
Democratic National Committee Chairman Lawrence F. O'Brien said the "bugging incident . . . raised the ugliest questions about the integrity of the political process that I have encountered in a quarter century.
"No mere statement of innocence by Mr. Nixon's campaign manager will dispel these questions."
The Democratic presidential candidates were not available for comment yesterday.