FBI Investigators in the Jessica Ridgeway case are asking everyone to report suspicious behaviors to investigators. They put out a list of things to look for in your friends, co-workers, or even family members.

Experts say often someone will unknowingly be associated with a suspect.

Here's what to look for:

o Immediately following the incident, he may miss work. The absence will be sudden and unplanned. He may either be a “no show” or he may offer a plausible excuse such as illness, death in the family, car trouble, etc.

o He may miss scheduled appointments/commitments and be unaccounted for during this period. These appointments/commitments may include such things as medical appointments, meetings with a probation officer, prior commitment to a friend or family member, drug test, etc.

o He may suddenly leave town, either with no explanation or with some plausible reason.

o This individual may express an intense interest in the status of this investigation and pay close attention to the media. However, some offenders may quickly turn off media accounts or try to redirect conversations concerning the victims or their families.

o There may be changes in the usual consumption of alcohol and/or drugs.

o He may make a change in his appearance or alter something to prevent identification, such as changing the look of his vehicle, clean or discard his vehicle.

The tip line is 303-658-4336.