KFOX had reported how several people claimed a Socorro police officer had wrongfully issued them traffic citations.
KFOX reporter Monica Balderrama discovered 10 other people were complaining about the same officer.
The Socorro Police Department launched an internal investigation.
Thursday, Chief Jaime Avalos said he deemed the case to be nonsustained because it's their word against the officer's.
But Avalos also said the officer resigned this week, citing personal reasons for his resignation.
The chief said he doesn't believe his resignation is connected to the claims against him.
The drivers who were cited are still trying to find out if they need to pay tickets.