“The American Airlines mechanic who was arrested and charged with sabotaging a plane this summer was fired from Alaska Airlines in 2008 after a series of missteps that led to several Federal Aviation Administration investigations, according to court documents obtained by Business Insider from an unsuccessful discrimination suit the mechanic filed against Alaska Airlines.

“Abdul-Majeed Marouf Ahmed Alani was arrested by the FBI on Thursday morning and charged with deliberately sabotaging an American Airlines plane that was about to operate a flight from Miami to Nassau, Bahamas.

“The criminal complaint filed against Alani said he was “upset” over stalled contract negotiations between the union representing the airline’s mechanics – the TWU-IAM Association – and tampered with a sensor connecting to the plane’s air data module, or ADM, on July 17.”

Read more at Business Insider