Gary Jackson said in a December deposition for a civil lawsuit that he believes both claims are false. Two former Blackwater employees, Brad and Melan Davis, have accused the company’s workers of using extreme force and improperly billing for travel costs. Blackwater has since changed its name to Xe.

Jackson refused to answer several questions during the deposition, exercising his Fifth Amendment right to not incriminate himself. Jackson’s attorneys advised him to do so when questions came close to the scope of a criminal case against him.

A federal grand jury in North Carolina indicted Jackson and others last year on weapons charges.

Brad Davis contended in court documents that he witnessed contractors using unjustified force to “kill or seriously injure innocent Iraqi civilians.” He said the workers did not stop to see if the civilians had been hurt or killed.

Susan Burke, an attorney for the Davises, asked Jackson if the company repeatedly used excessive force.

“My belief is that it is an absolute falsehood,” Jackson said, according to the deposition posted on the website of Burke’s law firm. Jackson left the job as president of the company at the end of 2008.