Racial profiling allegations involving two officers at Honolulu Airport were found to be unsubstantiated after an investigation, the U.S. Transportation Security Administration said.

The TSA said the agency considers the matter closed.

The investigation began in November after allegations surfaced that screeners at the airport targeted Mexican travelers for extra screening. Two employees claimed the officers known as "Mexicutioners" targeted Mexican passengers in an attempt to appear productive to their supervisors.

The TSA "determined the available evidence does not substantiate the allegations of racial profiling by two behavior detection officers" at the airport, the agency said in statement.

The allegations resulted in an immediate investigation into Honolulu airport’s behavior detection program, which involves officers who are trained to detect behavior, such as facial expressions, of those who intend to do harm.