in september 2009, antwan pittman was indicted for tara's murder. ttman was already a registered sex offender because of a felony convict involving a child. the search warrant filing in march, 2010, shows pittman's dna was found on tara's body and it says there's probable cause to believe pittman was also involved in the deaths of nicky thorpe, jarnise, and two other women. >> do you think antwan pittman is the serial killer? >> i think antwan pittman is a strong person of interest, as i stated before. and a number of those days along seven bridges road. and since his arrest, there has not been one person that was reported missing since that date that has been found dead, harmed in any way whatsoever. >> pittman has pleaded not guilty to the one murder charge against him and is behind bars awaiting trial. pit machine's defense attorney said he does not see pittman being charged with anything else. nicky thorpe's mother, jacky wiggins, is still overcome with grief. for the first time, she visited the site where nicky's body was found. >> okay. okay. >