Complex sentence: If a witness follows the offender to the point of abandonment, and observes the offenders tracks from beyond this point, that may help the police, but such civilian involvement, may be dangerous, and is generally not recommended by police departments.
Split into simpler sentences: If a witness follows the offender to the point of abandonment, and observes the offenders tracks from beyond this point, that may help the police. However, such civilian involvement may be dangerous, and is generally not recommended by police departments.