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ALEXANDRIA -- Police say bullets from one death match two unsolved killings; investigating possible serial killer.

WJLA-TV reports the February murder of Ruthanne Lodato shares similar characteristics with two other murders.

Ronald Kirby was shot to death in November; in 2003, well-known realtor was murdered in her Del Ray home; Ruthanne Lodato was shot inside her Alexandria home one month ago.

Investigators say the shootings are similar in nature and the victims lived within a mile-and-a-half of one another in Alexandria.

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