A local death investigation had led to murder charges for a local woman.
Perth OPP along with the OPP Criminal Investigation Branch and Stratford Police began investigating a death that took place in Perth County in 1985.
The victim in the case has been identified as 25 day old Meghan Thompson.
Police have charged 62 year old Katherine Thompson from St. Marys with first degree murder.
A release says a publication ban is in effect for proceeding but added this is an going investigation.
Anyone with any information is asked to contact police or Crime Stoppers.