SUDBURY -- Sudbury police say they arrested a man who allegedly threatened another man with a knife on Tuesday afternoon. In a twitter message, Sudbury police alerted the public to a heavy police presence in the area of Lasalle Boulevard and Barrydowne Road on Tuesday around 3:30 p.m. According to police, a 20-year-old man allegedly threatened another man with a knife in the parking lot of a New Sudbury LCBO store.