David Ryan, 58, an investigator for the U.S. Senate Select Committee on Ethics, has announced he will seek the Arlington Republican Party's endorsement of his independent candidacy for county sheriff.

Ryan, a retired FBI agent, said he would try to hold down jail costs through efficient management and would support alternative sentencing possibilities for nonviolent criminals so prison facilities will not need to be expanded. He said that morale in the sheriff's office is low.

Ryan is competing with Charles Bonneville, another independent candidate, for the GOP endorsement, which will be decided May 17 by party members. The sheriff's post is held by Democrat James Gondles, who is expected to seek reelection.

Prince William County Commonwealth's Attorney Paul B. Ebert has announced plans to seek reelection to the post he has held since 1968.

Ebert, 45, a Democrat, is past president of the Commonwealth's Attorneys Association of Virginia and the Prince William County Bar Association.

At a recent campaign kickoff barbecue, Ebert said he plans to stress his support of a Neighborhood Watch program, which he credited with lowering the county's crime rate. Ebert said he also plans to continue tough prosecution of drunk drivers.

Ebert, a former Falls Church justice of the peace, is unopposed in his bid for a fifth four-year term.

Fairfax Republican Gwendalyn F. Cody has announced she will try to regain her 38th District seat in the House of Delegates. Cody lost her bid for a second term in November in a close race with Democrat Nora Squyres. Cody will face Republican Lynne Purvis in a June 14 primary.

The 38th District is bounded by Rte. 7, Columbia Pike, Arlington Boulevard and Little River Turnpike.

Republican Del. James H. Dillard II, who represents the 41st District, plans to seek reelection. His district includes the Lake Braddock, Newington, Burke and Pohick areas of Fairfax County. Dillard was first elected to the House in 1971.

Bob Cunningham has announced his candidacy for the 42nd District House seat of retiring Republican Warren E. Barry, who has been in the General Assembly for 14 years. Cunningham, a retired Army official, has been active for the past few years in local Republican Party activities. This is his first bid for public office.

Also seeking the 42nd District GOP nomination in the June 14 primary is Jack Caussin, a social studies teacher at The Holton-Arms School in Bethesda. Caussin has served as president of the Springfield Civic Association and is a former county School Board member from Springfield.

William M. Lockwood, former chairman of the Fairfax County Planning Commission, has announced that he is running as an independent for the Providence District seat of Fairfax Supervisor James M. Scott, a Democrat.

Lockwood, now with the Army Corps of Engineers, has worked for the federal government as a planner and program analyst for more than 30 years. Lockwood says, if elected, he will retire from the Army Corps and serve full time on the board.

Democrat Audrey Moore announced that she plans to run for a fourth term as supervisor from the Annandale District and said that if reelected she would continue to fight for strict development requirements. Moore has long argued that Fairfax County's growth rate has contributed to higher taxes and a declining quality of life.

Moore said that she will not accept campaign contributions from anyone who might gain from rezoning actions by the supervisors.

Republican Stephen E. Gordy is running for reelection to the 37th District seat in the House of Delegates. Gordy, who in his first bid for elected office narrowly beat Del. John H. Rust Jr. in last September's primary, said major issues will include greater use of Dulles International Airport, elimination of the sales tax on food, stiff sentences for persons convicted of violent crimes and revising Virginia law where inequities exist for women and children.

House Minority Leader Vincent F. Callahan Jr. has announced he is running for reelection. Callahan, a Republican first elected in 1967, represents the 34th District, which includes McLean and Falls Church.

Noting he is "the only Northern Virginian to hold a leadership position in the House or the Senate," Callahan said he "offers 16 years of experience, expertise and effective representation that is sorely needed by the citizens of this region."