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SEATTLE-- A man was left with significant injuries Thursday morning after setting off a homemade explosive, Renton police said. It was possibly a sparkler bomb.

It happened around 4:25 a.m. in the area of Southeast 176th Street and Petrovitsky Road.

A Renton Fire Department spokesman said it was obvious the man's injuries were from a homemade firework.

The man, in his 20s, was taken to Harborview Medical Center. His condition was not immediately known.

The King County Sheriff s Bomb Disposal Unit investigated the explosion.

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