Seattle police have released previously unseen images showing drug paraphernalia from the scene of Nirvana frontman Kurt Cobain’s death 20 years ago.

Police spokeswoman Renee Witt said that a detective who recently reviewed the Cobain case files found several rolls of undeveloped film that were taken at the scene where the singer was found dead. The images released late on Thursday were from that discovery.

Cobain’s hat, sunglasses and other personal effects. Source: AP

One shows a box containing a spoon and what look like needles on the floor next to half a cigarette and sunglasses. The other showed the paraphernalia box closed, next to cash, a cigarette pack and a wallet that appears to show Cobain’s identification.

“There was nothing earth-shattering in any of these images,” Witt said.

Police took another look at the Cobain suicide to be ready to answer questions in connection with next month’s anniversary, she said.

“There’s still a lot of interest in this case,” Witt said. “The detective went into the case files to refresh himself. The outcome of the case has not changed.”

Cobain’s body was discovered in Seattle on April 8, 1994.

The singer, who was 27 when he died, sold millions of albums with Nirvana and helped popularise heavy, muddy “grunge” rock, along with bands like Pearl Jam, Soundgarden, Alice in Chains and Mudhoney.

Drugs paraphernalia in a cigar box. Source: AP

He grew up in the logging town of Aberdeen, Washington, about two hours southwest of Seattle. After he died thousands of young people converged on Seattle Center, near the Space Needle, for a public memorial.

Though his death was ruled a suicide some refused to believe that, leading to conspiracy theories that Cobain had been killed.

In a statement on the Seattle Police Department’s online blotter, the detective who re-examined the case dismissed that speculation.

“Sometimes people believe what they read – some of the disinformation from some of the books, that this was a conspiracy. That’s completely inaccurate,” said Detective Mike Ciesynski, who found the four rolls of undeveloped crime-scene photos.

“It’s a suicide. This is a closed case.”

• Readers seeking support and information about suicide prevention can contact Lifeline on 13 11 14 or the Suicide Call Back Service on 1300 659 467.