Massachusetts State Police are warning addicts and families of addicts after a spike in heroin-related deaths.The deaths have been reported across the state, and in many cases the heroin was purchased in urban areas, but the deaths were in middle-class, suburban areas, state police said.Photos: Before & After - Heroin's toll on addictsSo far, there have been 53 deaths this month statewide, including 37 in the past week. There were 16 heroin deaths last weekend alone, state police said.State police said those numbers do not include deaths in Boston, Worcester and Springfield since those cities keep their own numbers.Officials said they are waiting for results from the medical examiner to figure out what is in the heroin causing the increase in deaths.Gov.-elect Charlie Baker said he considers heroin and opioid addiction a major problem in the state, and said it would be an early focus of his administration when he takes office in January. He said the crisis is cutting across everything, including where people live and their class.