( CNN ) -- It 's a mind-boggling surprise in whodunit mysteries and soap operas , but a soldier in Colorado is using the dramatic ploy for real in a criminal courtroom : his `` evil twin '' may be responsible for the sex crimes against girls that he 's now accused of . The soldier 's defense rests partly on the fact he and his identical twin brother have virtually the same DNA , an attempt to undercut authorities ' allegations that the DNA from the crime scenes belongs to the soldier . The defendant , Aaron Gregory Lucas , 32 , is also a suspect in sex crimes in two other states , authorities say . In addition to raising his twin brother as a suspect , Lucas also claims that a third man may be the culprit in some of the crimes , court papers say . A Colorado judge in El Paso County ruled last week that Lucas will be allowed to name his twin brother , Brian Lucas , as a suspect in his defense . The judge also allowed the defense attorneys to use the name of a third man as a suspect , too . The twin brother , who has n't been charged in the any of the crimes , could not be reached by CNN for comment . So-called `` evil twin '' defenses have been used before in courtrooms , experts say . Defendants with an identical twin have sometimes accused the sibling as the real culprit to try to create reasonable doubt and seek acquittal , but the finger-pointing is n't a sure-fire strategy , said CNN legal analyst Danny Cevallos , who 's also a criminal defense attorney . `` No two of us have the same set of DNA -- with one exception and that is identical twins , '' Cevallos said . `` Cases like this are interesting , '' he added . `` Each twin essentially has to come up with an alibi , and we 're seeing that in this case and seeing it in other cases . It comes down to whose alibi is a little bit better . You can imagine the complexity if both twins are in the same geographic area at the same time of the crime . '' In fact , both Lucas brothers lived in Alabama and Texas , where the other sexual assaults occurred , but authorities in Alabama , Texas and Colorado say Aaron Lucas is the focus of their investigations , Colorado prosecutors said . Brian Lucas has been to Colorado only once in the past decade and did n't visit El Paso County , according to the Colorado Springs Gazette , citing a police detective 's testimony last week . Aaron Lucas , a decorated Army officer assigned to Fort Carson in Colorado Springs , is accused of trying to lure 11 girls between ages 6 and 9 and sexually assaulting three of them , authorities said . In all , Aaron Lucas faces 27 charges in six cases , officials said . Prosecutors want all the cases to be heard together , but defense attorneys do not . A hearing is scheduled for Tuesday to address the prosecution 's request . The 27 charges include two counts of second-degree kidnapping with a sex offense on a child ; one count of kidnapping with enticement of a child ; two counts of aggravated sexual assault on a child ; four counts of attempted sexual assault on a child ; one count of sexual assault on a child ; and other charges . Aaron Lucas is also charged with being a fugitive from justice in the Alabama and Texas cases . The Colorado crimes occurred in Fountain , Colorado Springs and unincorporated El Paso County from summer 2010 until late 2012 , when Aaron Lucas was arrested , CNN affiliate KKTV reported last year . The Colorado crimes began at the same time that Aaron Lucas was first stationed at Fort Carson , the affiliate reported . Both of the Texas and Alabama cases `` involve DNA evidence that the prosecution states matches the DNA of Aaron Lucas , '' defense attorneys said in court papers . When Aaron Lucas was arrested last year , Colorado authorities took his DNA and ran the findings in a national law enforcement database , said police in Madison , Alabama , and Texarkana , Texas . His DNA matched samples found in unsolved sex crimes in those jurisdictions , police said . But Aaron Lucas offers a different interpretation of those findings . `` Aaron Lucas has an identical twin brother , Brian Lucas , who has ( a ) similar DNA profile , '' Aaron Lucas ' attorneys said in court documents . `` Additionally , witness statements from the Alabama case describe a vehicle matching that of Brian Lucas being in the area of the attack prior to the assault . `` The defense believes that Mr. Brian Lucas contributed the DNA in the Alabama and Texas cases and that it is his DNA that was found during those crimes , not Aaron Lucas 's . '' Aaron Lucas also argues that some of the Colorado Springs sex crimes may have been committed by a man who had been arrested for indecent exposure , defense attorneys said in court papers . That man , whose name is listed in court papers , also `` bears a striking resemblance to the descriptions provided by several of the complaining witnesses ( and ) owned and drove vehicles matching the descriptions of the vehicles driven by the alleged perpetrator , '' the attorneys said . Aaron Lucas 's attorneys said it is unclear whether the twin brother will be compelled to appear during the trial , expected to begin in January .
Aaron Lucas is charged with trying to lure 11 girls and sexually assaulting three of them . He is also a suspect in sex crimes in Alabama and Texas . Comment: A Colorado judge allows Lucas to cite his twin brother as a potential suspect .