The team behind the movie 'You're No Indian' received a cease-and-desist letter this week from attorneys representing the Pechanga Band of Indians and its chairman, Mark Macarro, demanding all screenings and distribution of the documentary be halted.

Received on 24 November, the letter raises concerns about research practices and representation in the film which explores the controversial practice of tribal disenrollment through the stories of those affected.

Director Ryan Flynn said the team stands by the integrity of their work, which was developed over seven years.

"Our team spent years documenting these stories, speaking with families, reviewing records, and consulting experts," Mr Flynn said.

He added multiple attempts were made to include Mr Macarro's perspective during production.

"We also reached out to Chairman Macarro multiple times during production - and documented those attempts - offering him the opportunity to share his perspective," he said. "That invitation remains open."

While the filmmakers are reviewing the legal claims with counsel, Mr Flynn said they remain confident in the film's approach.

"Our aim has always been to approach this subject with care, accuracy, and respect," he said.

"If Chairman Macarro wishes to share his viewpoint now, we welcome that dialogue and will present it fully and without alteration."

'You're No Indian' focuses on the personal and community impacts of disenrollment from tribal citizenship, a process affecting more than 11,000 individuals across 80 tribes in recent decades.

The film has screened at Dances With Films LA, Montana International Film Festival, Shining Mountains Film Festival, the United Nations Association Film Festival and the RNCI Red Nation International Film Festival, receiving the Joanelle Romero Impact Award and an Honourable Mention for Best Documentary Feature.

Producers Michael Sammaciccia and Santana Rabang, along with executive producers Tantoo Cardinal and Wes Studi, say they remain committed to transparency and ensuring the voices of those featured in the film continue to be heard.