Police began a major campaign Tuesday in front of the Keio Line’s Seiseki-Sakuragaoka Station in Tokyo to solicit any information from passersby that could solve the murder of a family of four in Setagaya Ward in late 2000.

Two officers wore sweat shirts similar to the one found at the murder scene as other police asked for information that could lead to an arrest.

Company employee Mikio Miyazawa, 44, his wife, Yasuko, 41, their daughter, Niina, 8 and son, Rei, 6, were slain in their home on Dec. 30 or 31, 2000. Despite various pieces of evidence found at the scene, police have made no arrests.

The Seijo Police Station’s special investigative squad recently determined that 10 sweat shirts similar to the one left at the home were sold in four shops in Tokyo, with one buyer identified.

They said a shop in front of Seiseki-Sakuragaoka Station sold three of the sweat shirts between summer and autumn 2000.

The L-size sweat shirt found at the scene is gray with purple raglan sleeves and neck, and it was imported from China.

The sweat shirt is no longer in production, but police asked the Chinese manufacturer to create replicas.

The two officers wore those remakes Tuesday as well as the same type of a hat and bag also found at the scene, so they would look like the culprit.

“I remember this incident because it was such a tragedy. I hope the culprit will be found as soon as possible,” said a 55-year-old woman passing by the station.

To track down the purchasers, police distributed posters Monday showing information on the sweat shirt.

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