Police have made a partial fingerprint match between a gunman who shot and killed a woman and two teenage girls in a supermarket in western Tokyo two decades ago, and a local resident who has since died, investigative sources said on Wednesday.

Part of a fingerprint found on sticky tape used to tie up two high school-age girls appears to tally with records for a man who lived nearby at the time, the sources said. The three were found dead, shot in the head, in an office at a supermarket in Hachioji, Tokyo, in July 1995.

Police discovered the match after trolling through a database of criminal records.