Mexican authorities are attempting to track down a gunman who reportedly attacked an official at the U.S. consulate in the western city of Guadalajara, Mexico.

The Mexican Attorney General's Office said Saturday that the official was wounded in the attack that they said occurred Friday in Guadalajara.

The official, whose name was not disclosed, was seen in surveillance video that shows the gunman stalking the official in a parking garage, according to the Associated Press. The attack on the U.S. consular employee appeared to be a direct attempt to kill the official.

The Federal Bureau of Investigation said it is offering a $20,000 reward for information on the gunman, according to the U.S. consulate's Facebook page.

U.S. officials have been targeted in previous years in attacks related to drug cartels. The last attack took place in 2010. A Mexican gang leader was sentenced to life in prison in 2014 for his role in the 2010 killings, which included a U.S. consulate official, her husband and the spouse of another consulate employee in the border city of Juarez.