A former FBI agent is corroborating claims that Jamie Spears spied on his daughter Britney during the course of her conservatorship, according to new legal documents filed by the pop star's lawyer.

Britney's lawyer, Mathew Rosengart, filed a declaration on behalf of the 40-year-old from ex-FBI agent Sherine Ebadi who backed assertions that Jamie instructed Black Box Security 'to place a secret recording device in Ms.

Attorneys for Britney Spears hired the former federal agent, who currently oversees forensic investigations for a private firm, to look into troubling allegations leveled by a former security company employee tasked with looking after the star. .

Corroborating troubling claims: In a new legal filing, a former FBI agent backed claims that Jamie Spears instructed a security firm to place a listening device in Britney Spears' bedroom without her consent.

Ebadi was told by Alex Vlasov, the former Black Box security employee, that under Jamie's instructions, a recording decide was duct-taped 'behind furniture so it could not be seen' in Britney's bedroom. .

Allegations: Ebadi was told by Alex Vlasov, the former Black Box security employee, that under Jamie's instructions, a recording decide was duct-taped 'behind furniture so it could not be seen' in Britney's bedroom.

Spears and her personal court-appointed attorney, Sam Ingham, were among the private communications that Black Box and Mr.

Spears's communications with her lawyer continued until at least 2020, when [Black Box owner Edan Yemini] instructed Mr.

The allegations that Jamie Spears spied on his daughter were first raised by a former employee of Black Box Security in a New York Times documentary on the hitmaker, Controlling Britney Spears. .

Concerning: The allegations that Jamie Spears spied on his daughter were first raised by a former employee of Black Box Security in a New York Times documentary on the hitmaker, Controlling Britney Spears

'All of his actions were well within the parameters of the authority conferred upon him by the court,' a lawyer for Jamie Spears told the Times when the documentary came out

Alex Vlasov, a former employee of Black Box Security, told The New York Times that the Spears's phone calls and messages were secretly recorded as part of her 13-year conservatorship, overseen by her father. 

'All of his actions were well within the parameters of the authority conferred upon him by the court,' a lawyer for Jamie Spears told the Times when the documentary came out. 

Recently, the Spears sisters have been lobbing barbs at one another on social media with Britney calling Jamie Lynn 'scum' and accusing her of inventing stories in order to peddle her new book

Feuding: Recently, the Spears sisters have been lobbing barbs at one another on social media with Britney calling Jamie Lynn 'scum' and accusing her of inventing stories in order to peddle her new book