Left: Warren H. Fulton III, 22, was found shot to death outside Reston on Dec. 6, 1988. Right: Veronica Lynn “Tina” Jefferson, 24, found raped and shot to death in Arlington on May 11, 1988. Prieto was linked by DNA. (Family photo/Arlington Police Department)

Crimes for which Alfredo Prieto has been convicted or linked to by evidence:

●May 11, 1988: Veronica Lynn “Tina” Jefferson, 24, found raped and shot to death in Arlington. Prieto linked by DNA.

●Dec. 6, 1988: Rachael A. Raver, 22, and Warren H. Fulton III, also 22, found shot to death outside Reston. Raver had also been raped. Prieto linked by DNA.

●Sept. 2, 1989: Manuel F. Sermeno, 27, found shot to death in a burning car along I-95 near Prince William Forest park. Prieto linked by ballistics.

●May 5, 1990: Stacey Siegrist, 19, and Tony Gianuzzi, 21, found shot to death in Rubidoux, Calif. Siegrist had also been raped. Prieto linked by DNA.

Alfredo Prieto (AP)

●June 2, 1990: Lula Farley, 71, and Herbert Farley, 65, abducted in Ontario, Calif. Lula Farley was shot to death. Herbert Farley was found two weeks later, shot to death. Prieto linked by ballistics.

●Sept. 2, 1990: Yvette Woodruff, 15, raped and shot to death in Ontario, Calif. Prieto identified by surviving victims.

●Sept. 6, 1990: Prieto arrested in Ontario, Calif.