HALIFAX -- Shambhala International is dismissing new allegations against the Buddhist organization's spiritual leader, calling the fresh claims of sexual misconduct and financial coercion "grossly irresponsible."

A new report by Buddhist Project Sunshine released Thursday details new accusations against Sakyong Mipham Rinpoche, leader of the Halifax-based Shambhala organization and its more than 200 meditation centres worldwide.

He stepped back from his duties last month pending the outcome of a third-party investigation into an alleged pattern of sexual misconduct highlighted in previous reports about incidents in the Buddhist community.

Former Shambhala community member Andrea Winn said the latest report brings to light new accusations that are "more serious in nature."

"The new report brings to light a deeper gravity of the alleged crimes and what it means to be a sexual predator," she said in an interview Wednesday.

In addition to allegations of sexual misconduct that appear to implicate other Shambhala leaders, the report also details claims of coercion for money and real estate.

In a statement Thursday, Shambhala International rejected the report's findings.

"These allegations are not only unfounded, but they each are based on speculative and unsubstantiated claims made by a single unnamed source," the Buddhist organization said of one series of allegations in the report.

"For Project Sunshine to publish such salacious and defamatory information is grossly irresponsible."

The statement is a departure from the organization's response to earlier reports, which recognized that Shambhala was part of a "broader cultural reckoning in contemporary society."

In February, Shambhala leaders acknowledged in an open letter that "abhorrent sexual behaviour" by some men in the community caused some women to feel unsafe.

The Kalapa Council -- the governing body of the Buddhist group, which announced last month its members would resign en masse through a "phased departure" -- said the community was going through its own "collective wake-up call."

Previous accusations against Mipham suggested a pattern of behaviour of heavy drinking and using his "kusung" or attendant to "procure women students for his own sexual gratification," according to a report.

None of the allegations has been proven in court and Halifax Regional Police said there are no charges against him.

Carol Merchasin, a lawyer overseeing the ongoing investigation with Buddhist Project Sunshine, said in a memo included in the latest report that the new allegations against Mipham and other Shambhala leaders suggest "a new level of harm."

She said she found the complainants -- whose accounts are included the report -- "extremely credible."

"There are simply too many reports following the same pattern to believe that this number of unrelated women are all lying," Merchasin said, noting that Mipham allegedly engaged in sexual misconduct and an abuse of power over three decades.

Last month, Mipham apologized for the "pain, confusion and anger" sweeping through the Shambhala community.

"In a state of complete heartbreak, I write to you, humble, embarrassed, and thoroughly apologetic for disappointing you," the 55-year-old guru said in July.

"I am committed to engaging with women and others in our community who have felt marginalized, beginning this week. I will be using this time of self-reflection to deeply listen and to better understand how the dynamics of power, gender and my actions have affected others."

He said he "engaged in relationships with women in the Shambhala community" and has recently learned that some of these women felt harmed.

"I would like you to know that over the years, I have apologized personally to people who have expressed feeling harmed by my conduct, including some of those who have recently shared their stories," Mipham said in the public apology.

Shambhala announced a leadership transition plan after members of the Kalapa Council announced their resignation.

In a letter to the Shambhala community last month, the council announced that a transition team will select and appoint an interim board of directors, an effort to separate the current leadership from the appointment of the next board.

The council said the transition team will also select a so-called process team, which will be responsible for improving the Buddhist organization's future leadership, representation and governance structures.

The council has hired Halifax law firm Wickwire Holm to investigate the allegations.

However, the latest report by Buddhist Project Sunshine said there is a "general mistrust" of the investigation, as it's unclear who hired the law firm or who it will report to.

An interim board and the process team are expected to be in place by Sept. 10, with the Kalapa Council transitioning its responsibilities to the interim board by Sept. 22.

The council also said the process team "will listen to the community, take feedback, and guide a process to oversee the deeper and longer process of inviting a new approach to community leadership in Shambhala."