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A retired Los Angeles police detective who handled the murder case of rapper Biggie Smalls died Wednesday from a suspected heart attack.

Los Angeles County sheriff’s deputies at the Homicide Bureau reported that Russell Poole collapsed Wednesday morning, according to a sheriff’s department official. He was meeting with detectives about a cold case when he collapsed and was unresponsive. He was rushed to a local hospital, where he died, the coroner’s office said.

Poole worked on Smalls’ murder case for about a year, according to Times archives.

The 24-year-old rapper, born Christopher Wallace and known also as Notorious B.I.G., was shot to death while sitting in a car at a red light in Mid-Wilshire on March 9, 1997.

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