Two men who were arrested during the National Johns Suppression Initiative on July 29 won't be charged.
Officer Katie Flood confirmed Friday that prosecutors declined to charge Cory Walcott with solicitation of prostitution or Maurice Briggs with pandering.
Eleven people were cited during the initiative, which officers said was aimed at reducing sex trafficking.
Flood said no minors were rescued or involved in the local operation. The ages of the four women charged with prostitution range from 23 to 36.
Prostitution is defined as a person willingly exchanging sex for money. Sex trafficking happens when a commercial sex act takes place through force, fraud or coercion by a trafficker.
This is the third time in the past year Lincoln police have gotten involved in the nationwide initiative.
In September, they arrested 16 men, two for felony solicitation of prostitution. In February, 13 people were arrested, including six would-be sex buyers and two people for pandering after driving women to hotels for prostitution.