An investigation into methamphetamine manufacturing in the Milford area has led to the arrest of 4 men.  Police executed a search warrant at a home and outbuildings and trailers at a property on Abbotts Pond Road Friday where they found 2 active meth labs and an extensive supply of the ingredients to make meth.  25 year old Nathan Houck and 28 year old Joshua Ward – both of Milford, 33 year old Erc Kuntz of Laurel and 36 year old Michael Vincent of Millsboro were arrested and charged with a variety of drug offenses.  All four are being held in default of $69,000 cash bail.   Abbotts Pond Road was closed for about 3 hours as DNREC officials dismantled the meth labs.