Fifa whistleblower Phaedra Al-Majid fears for her safety
Fifa whistleblower Phaedra Al-Majid says she will "look over my shoulder for the rest of my life" after making allegations of corruption against Qatar's successful 2022 World Cup bid.
A two-year investigation has cleared the Gulf state of wrongdoing.
Now Al-Majid, whose testimony was not regarded as reliable, says she is paying the price for speaking out.
"I've been introduced to a whole new culture of paranoia, fear and threats," Al-Majid told BBC Sport.
"I will always look over my shoulder for the rest of my life."
Qatar's World Cup organising body has always "vehemently" denied all allegations of wrongdoing.
Al-Majid's allegations first came to light in 2011. Later the same year she retracted her accusations and signed an affidavit saying they were false.
However, she says she was coerced into changing her statement and repeated her allegations to lawyer Michael Garcia while he was compiling his 430-page report, which was then handed over to Fifa.
She now claims the FBI visited her in September 2011 after they became aware of threats against her.
Garcia's report has prompted Adidas - one of Fifa's six official partners - to request a meeting with the governing body to discuss allegations of corruption around the bid process for the 2018 and 2022 World Cups.
Garcia moved to criticise Fifa's summary 42-page publication of his findings hours after its release, prompting FA chairman Greg Dyke to write to world football's governing body requesting the full publication of the investigator's findings.
But in a letter responding to Dyke, Fifa president Sepp Blatter says full publication would break Swiss law and Fifa's own rules.
He says the consent of all parties mentioned in the report would be needed for it to be made fully public and asks Dyke if his own letter may be interpreted as "providing consent" on behalf of everyone connected with England's 2018 bid team.