August 7, 2014 1:10 pm Rash of Deadly Overdoses Have Police Searching For Souce Worcester officials are warning drug users in the city to avoid heroin after at least nine drug overdose deaths since Friday US & World Videos 0:39 Police respond to incident in Whitinsville 2:39 American man awaits sentencing in Turks and Caicos ammo case 2:05 MIT monitors pair of opposing protests on campus 3:41 Cool air to linger over Boston into the weekend 2:28 Karen Read trial continues, jurors visit crime scene