Ex-Warrant Singer Jani Lane DEAD AT 47

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Jani Lane! Jani Lane -- former lead singer of the rock band Warrant -- was found dead at a hotel in L.A. Thursday evening ... TMZ has learned.

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Jani Lane! Lane's body was discovered at the Comfort Inn hotel in Woodland Hills, CA. So far, no official cause of death has been released.

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Jani Lane! Lane famously penned the band's biggest hit "Cherry Pie" back in 1989 ... before eventually leaving the band to pursue a solo career.

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Jani Lane! Lane had a history of alcohol-related issues -- he was ordered to serve 120 days in jail after he was arrested for DUI in 2010 ... his second DUI in two years.

Lane was 47.

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Jani Lane!

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Jani Lane!

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Jani Lane!

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Jani Lane!

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Jani Lane!

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Jani Lane!

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Jani Lane!

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Jani Lane!

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Jani Lane!

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Jani Lane!

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Jani Lane!

halle berry

Jani Lane!

halle berry

Jani Lane!

halle berry

Jani Lane!

halle berry

Jani Lane!

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Jani Lane!