The suspect is described as an Hispanic or Middle Eastern male in his 20s or 30s. He is 5 feet 7 inches to 5 feet 10 inches and 160 to 175 pounds.

The man is suspected of sexually assaulting a woman in April near East Alameda Avenue and South Ironton Street. The woman was kidnapped and assaulted in the man's car.

The second case was in mid-August. A woman was accosted while sitting outside her home near East Iliff Avenue and South Peoria Street. The victim resisted and the suspect got away on foot.

The third incident happened early Wednesday morning. A woman was outside her home in the area of East Iliff Avenue and South Peoria Street. She resisted and the man again got away on foot.

In all three cases, police say the suspect used a knife to threaten his victims.

Anyone with information the case is asked to call Crime Stoppers at 720-913-7867.

The Aurora Police Department is offering up to $3,000 for information leading to the arrest and conviction of the suspect. Police released two sketches of the possible suspect on Wednesday.