Johnny Depp made a surprise appearance on Friday, joining Alice Cooper at his concert in London, honoring Ozzy Osbourne with a song just days after his death. 

The "Pirates of the Caribbean" star rocked out with Cooper and his band on his guitar, playing Black Sabbath’s 1970 hit "Paranoid" to a raucous audience while sporting a Captain Jack-style scarf and sunglasses. 

"Lovely tribute last night to Ozzy by Alice Cooper featuring Johnny Depp," one person wrote on social media while posting video of the performance.

A second person posted on X: "I saw Johnny Depp last night in London. He made a surprise appearance at the Alice Cooper gig I was at. I was so excited." 

OZZY OSBOURNE'S MESSAGE TO FANS CAPS DECADES-LONG LEGACY: 'THANK YOU FROM THE BOTTOM OF MY HEART'

Cooper jokingly introduced Depp as "some guy we found out in the alley that said something about vampires" as the crowd roared, another video on social media showed. 

Depp and Cooper are in the band The Hollywood Vampires together. 

"Here’s for Ozzy!" Cooper shouted to the crowd while wearing an Osbourne T-shirt as they finished the song. 

The actor, who is returning to Hollywood with the upcoming thriller "Day Drinker" with Penélope Cruz, stayed around after the Osbourne tribute to play the Alice Cooper classic "School’s Out" with the band. 

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Osbourne died on Tuesday at 76 years old after battling multiple health issues, including Parkinson’s, which he announced in 2022. 

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"Everybody in, this one’s for Oz tonight," Cooper told his band backstage before a show in Cardiff, Wales, on the night Osbourne died in a video he shared on his Instagram. 

Cooper wrote in the post’s caption that the band found out about Osbourne’s death just before going on stage. 

"Well, we all know that time is going to take us rockers, but when the giants fall, it’s really hard to accept," Cooper said in a statement he posted in the caption and recorded for his radio show Alice’s Attic before performing that night. "Even though everybody saw it coming with Ozzy, it just took our breath away when it happened. So Ozzy and family - your records and your music and your legend and all that you brought - the humor to the rock business - will live on forever and we’re gonna miss you man."

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 The post said that the Cardiff show was dedicated to the late Black Sabbath frontman. 

"Following the show, Alice summed up his thoughts by saying ‘The whole world is mourning Ozzy tonight. Over his long career, he earned immense respect among his peers and from fans around the world as an unmatched showman and cultural icon,'" the post said. 

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Cooper said he always saw Osbourne as a mix between the "Prince of Darkness" and what his family and friends saw: "a court jester."

"He was and will continue to be a rock n roll legend. Rock n Roll is a family and a fraternity. When we lose one of our own it bleeds. I wish I would have gotten to know my brother Ozzy better," he added. 

A violent offender was mistakenly released from the Orleans Parish Jail due to a clerical error, according to the Orleans Parish Sheriff’s Office. 

The inmate, Khalil Bryan, was discharged Friday despite facing multiple charges. The office confirmed that an internal investigation is now in motion in a statement to WDSU.

In the statement released by the Orleans Parish Sheriff’s Office, Sheriff Susan Hutson acknowledged the mistake and accepted responsibility.

"The Orleans Parish Sheriff’s Office takes full responsibility for the clerical error that led to the mistaken release of Khalil Bryan, and we offer our sincere apology to the public, our law enforcement partners and the court. This incident was the result of human error: a misidentification based on a shared last name between two individuals. We are currently conducting a full internal investigation, and I can confirm that disciplinary actions will occur," Hutson said.

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"Mr. Bryan is facing violent and non-violent charges, and we are coordinating closely with law enforcement agencies to ensure his swift return to custody. Most importantly, the victims in these matters have been notified. We are implementing safeguards to prevent this from happening again. Public safety remains our highest priority."

According to information from the Orleans Parish District Attorney’s Office and OPSO, Bryan was in custody for illegal possession of stolen property, possession of drug paraphernalia and resisting an officer. He also had an active warrant from Criminal District Court Section H for aggravated assault with a firearm, domestic abuse, child endangerment and home invasion.

Bryan was also wanted in nearby Jefferson Parish and was being held on a $100,000 bench warrant for failure to appear, along with a separate $25,000 bond tied to recent felony charges.

ORLEANS PARISH SHERIFF BOASTED ABOUT JAIL SECURITY DAYS BEFORE 10 INMATES ESCAPED

Orleans Parish District Attorney Jason Williams issued a sharply worded statement after the mistaken release.

"We have been made aware that inmate Khalil Bryan was wrongfully released from custody by the Orleans Parish Sheriff’s Office earlier today due to a serious error in inmate processing," Williams said.

"Despite those [bond] holds, Bryan was released in error when deputies, responding to a bond posted by an unrelated individual for another inmate, failed to properly verify identity and mistakenly discharged Bryan instead," the DA added.

"This is a deeply troubling incident that underscores the ongoing systemic issues surrounding the exercise of custody and control over detained individuals. The failure to properly confirm the identity of an inmate prior to release is an unacceptable lapse that presents a real and immediate risk to public safety."

"OPDA Victim Advocates have initiated victim outreach and will continue efforts until all victims and witnesses associated with Bryan's prosecution are reached. Where we are unable to make contact, we are dispatching investigators to ensure the affected victims and their families are notified and receive appropriate support.

"The public deserves a justice system that operates with integrity, professionalism and vigilance, particularly when it comes to protecting victims."

Hutson confirmed that all known victims have been notified. The District Attorney’s Office said investigators are actively working to reach anyone who may not have been contacted, including through in-person visits if needed.

This release comes 10 weeks after a high-profile escape from the same prison May 16, when 10 inmates fled from the Orleans Parish Jail. 

Nine were recaptured and pleaded not guilty earlier this week. One man, Derrick Groves, remains at large, according to court and OPSO records.

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Law enforcement is now working across parish lines to locate and detain Bryan.

"We urge anyone with information about Khalil Bryan’s whereabouts to immediately contact law enforcement," the District Attorney’s Office said.

The Orleans Parish Sheriff's Office and Orleans Parish District Attorney's Office did not immediately respond to Fox News Digital's request for comment.