Charges are brought against a Richfield Springs man after an investigation determined he threatened two teenagers with a knife. According to New York State Police 45-year-old Thomas A. Niznik made the threat after one juvenile broke the chain on their bike and was trying to fix it. The two reported the incident to an adult who called 9-1-1 and identified Niznik as the suspect. He was booked then released pending a court appearance next Tuesday.