BUFFALO, NY - Buffalo police homicide detectives are investigating a overnight shooting on the city's east side that critically injured a Cheektowaga man. Police were called to the intersection of Walden Avenue and Stewart Avenue around two Sunday morning. Police say a man in his 40s was shot while standing on the sidewalk in what they believe appears the shots may have been fired from a car. The victim is in currently in critical condition at ECMC. Police are asking if you have information to call their confidential tipline at 847-2255.