(Woonsocket, RI) -- Charges are being dropped against one person in a murder case in Woonsocket. Tyler Grenon had been charged with first-degree murder and conspiracy last year in connection to the 2016 stabbing death of Constance Gauthier, his neighbor. Charges are still pending against Matthew Dusseault, also of Woonsocket. Authorities have not said anything about a possible motive in the case.