A state investigator and former police sergeant is dropping out of the Commerce City council race after he was arrested earlier this month on suspicion of driving under the influence.Joe Sandoval, 40, was running for the at-large seat on the city council.At one time, Sandoval was the spokesman for the Commerce City Police Department and a school resource officer. He is currently working as a criminal investigator with the state's Department of Revenue Gaming and Medical Marijuana Enforcement Division.In a letter dated Oct. 3 -- two days after his arrest, Sandoval asked to withdraw from the race. The city clerk's office received the notarized letter on Monday.Sandoval was pulled over by an Adams County deputy near 84th Avenue and Conifer Road on Saturday, Oct. 1.According to the incident report, when the deputy asked Sandoval for his license, registration, and proof of insurance, Sandoval flashed his Department of Revenue ID with the word "POLICE" then asked, Will this work?When the deputy asked for his license again, Sandoval reached for his badge. In the report, the deputy stated that he smelled alcohol on Sandoval's breath and when asked, Sandoval admitted to drinking a few beers.The reporting deputy stated that before Sandoval failed his roadside sobriety test he asked, "Are you really going to do this to me? Don't you know who I am?"Sandoval agreed to a blow into a portable breath instrument and blew a .093, according to the incident report.Sandoval was also cited for DUI in 2009 after he was involved in a rollover crash in December 2008. He later pleaded guilty in April 2009 to the lesser charge of driving while ability impaired.There is no word if Sandoval is back at work at the Department of Revenue.