Unless flight by the person or other circumstances makes it impracticable, a law enforcement
officer, upon finding a person suspected to be in violation of this chapter, shall
ask the apparent offender's age and reason for being in a public or semi-public place
during curfew hours. The law enforcement officer shall immediately attempt to verify
statements or other information provided by the juvenile through contact with the
parent, legal guardian or others. The officer shall not issue a written warning to
appear or take into custody any person pursuant to this article unless the officer
reasonably believes that an offense has occurred and that, based on any response or
circumstance, no defense in Section 21-205 is present.